chore(release): update package version to 1.0.66

Table.Columns/Constraints/Indexes/Relationships are Go maps, and every
writer, reader, diff, inspector, and merge code path that iterated them
directly was subject to Go's randomized map order, so identical input
could produce different output (or a different in-report violation/diff
order) on every run. Most visibly this showed up as bun/gorm `unique:`
struct tags changing order across consecutive `make models` runs with no
source change.

Fixed by sorting map iteration (by Sequence then Name, or alphabetically
for string-keyed maps) everywhere the order affects generated output or
first-match tie-break logic, across the bun, gorm, sqlite, dbml, drawdb,
pgsql, prisma, graphql, typeorm, drizzle, and dctx writers; the dctx,
prisma, and typeorm readers; the shared models.GetPrimaryKey/
GetForeignKeys helpers; pkg/diff, pkg/inspector, and pkg/merge; and the
TUI column/relationship pickers in pkg/ui.

README.md

@@ -151,8 +151,26 @@ pkg/merge/            Schema merging
 pkg/models/           Internal data models
 pkg/transform/        Transformation logic
 pkg/pgsql/            PostgreSQL utilities
+pkg/sqltypes/         Nullable SQL types for generated/hand-written models (see below)
 ```
 
+## Nullable Types (`pkg/sqltypes`)
+
+The `bun` and `gorm` writers can generate model structs using
+[`pkg/sqltypes`](./pkg/sqltypes/README.md) — nullable types (`SqlString`,
+`SqlInt32`, `SqlTimeStamp`, `SqlStringArray`, …) that implement
+`database/sql.Scanner`, `driver.Valuer`, and JSON/YAML/XML marshalling in one
+type, selected via `--types sqltypes`. See the
+[`pkg/sqltypes` README](./pkg/sqltypes/README.md) for the full type
+reference, or the [`bun`](./pkg/writers/bun/README.md) /
+[`gorm`](./pkg/writers/gorm/README.md) writer docs for the `--types` flag
+(`sqltypes`, `stdlib`, or `baselib`). PostgreSQL array columns are the one
+exception: the `bun` writer always generates native Go slices (`[]string`,
+`[]int32`, …) with an explicit `array` bun tag, regardless of `--types` —
+see [`bun`'s `--array-nullable`](./pkg/writers/bun/README.md#nullablearrays)
+flag for nullable-array handling. The `SqlXxxArray` wrapper types remain
+available in `pkg/sqltypes` and are still used by the `gorm` writer.
+
 ## Contributing
 
 1. Register or sign in with GitHub at [git.warky.dev](https://git.warky.dev)

cmd/relspec/assets.go

@@ -0,0 +1,214 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/spf13/cobra"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/assetloader"
+	"git.warky.dev/wdevs/relspecgo/pkg/pgsql"
+)
+
+var (
+	assetsDir          string
+	assetsConn         string
+	assetsIgnoreErrors bool
+)
+
+var assetsCmd = &cobra.Command{
+	Use:   "assets",
+	Short: "Load and execute asset manifests against a database",
+	Long: `Load local binary and text asset files into a PostgreSQL database.
+
+Assets are described by YAML manifests (assets.yaml) colocated with the files.
+Each manifest entry specifies the file to load and the SQL call to execute.
+File bytes are bound as native pgx parameters — never as SQL text literals —
+so binary files stay byte-exact with no size or encoding limitations.
+
+Manifests must live in directories that follow the naming pattern used by
+relspec scripts:
+  {priority}_{sequence}_{name}/   or   {priority}-{sequence}-{name}/
+
+This allows asset-loading steps to be ordered correctly alongside SQL scripts
+in a migrate-apply pipeline.
+
+Manifest format (assets.yaml):
+  - file: invoice.md
+    call: |
+      INSERT INTO org.filepointer (rid_owner, filename, contenttype, jsonstore)
+      VALUES (1, :filename, 'text/markdown', jsonb_build_object('content', :bytes::text))
+  - file: logo.png
+    call: UPDATE branding SET logo = :bytes WHERE id = 1
+    params:
+      owner_id: "42"
+
+Built-in placeholders:
+  :bytes    — the file's raw content as bytea
+  :filename — the base name of the file (string)
+  :any_key  — a static value declared in the entry's params map`,
+}
+
+var assetsListCmd = &cobra.Command{
+	Use:   "list",
+	Short: "List asset manifests from a directory",
+	Long: `List all asset manifest entries from a directory in execution order.
+
+The directory is scanned recursively for assets.yaml files located in
+directories that follow the {priority}_{sequence}_{name} naming convention.
+
+Example:
+  relspec assets list --dir ./sql`,
+	RunE: runAssetsList,
+}
+
+var assetsExecuteCmd = &cobra.Command{
+	Use:   "execute",
+	Short: "Execute asset manifests against a database",
+	Long: `Execute asset manifest entries from a directory against a PostgreSQL database.
+
+Asset manifests are executed in order: Priority (ascending), Sequence (ascending),
+Directory name (alphabetical). By default, execution stops on the first error.
+Use --ignore-errors to continue even when individual entries fail.
+
+PostgreSQL Connection String Examples:
+  postgres://username:password@localhost:5432/database_name
+  postgresql://user:pass@host/dbname?sslmode=disable
+
+Examples:
+  relspec assets execute --dir ./sql \
+                         --conn "postgres://user:pass@localhost:5432/mydb"
+
+  relspec assets execute --dir ./sql \
+                         --conn "postgres://localhost/mydb" \
+                         --ignore-errors`,
+	RunE: runAssetsExecute,
+}
+
+func init() {
+	assetsListCmd.Flags().StringVar(&assetsDir, "dir", "", "Directory to scan for asset manifests (required)")
+	if err := assetsListCmd.MarkFlagRequired("dir"); err != nil {
+		fmt.Fprintf(os.Stderr, "Error marking dir flag as required: %v\n", err)
+	}
+
+	assetsExecuteCmd.Flags().StringVar(&assetsDir, "dir", "", "Directory to scan for asset manifests (required)")
+	assetsExecuteCmd.Flags().StringVar(&assetsConn, "conn", "", "PostgreSQL connection string (required)")
+	assetsExecuteCmd.Flags().BoolVar(&assetsIgnoreErrors, "ignore-errors", false, "Continue executing even if entries fail")
+	if err := assetsExecuteCmd.MarkFlagRequired("dir"); err != nil {
+		fmt.Fprintf(os.Stderr, "Error marking dir flag as required: %v\n", err)
+	}
+	if err := assetsExecuteCmd.MarkFlagRequired("conn"); err != nil {
+		fmt.Fprintf(os.Stderr, "Error marking conn flag as required: %v\n", err)
+	}
+
+	assetsCmd.AddCommand(assetsListCmd)
+	assetsCmd.AddCommand(assetsExecuteCmd)
+}
+
+func runAssetsList(cmd *cobra.Command, args []string) error {
+	fmt.Fprintf(os.Stderr, "\n=== Asset Manifests List ===\n")
+	fmt.Fprintf(os.Stderr, "Directory: %s\n\n", assetsDir)
+
+	items, err := assetloader.ScanDir(assetsDir)
+	if err != nil {
+		return fmt.Errorf("scanning directory: %w", err)
+	}
+
+	if len(items) == 0 {
+		fmt.Fprintf(os.Stderr, "No asset manifests found.\n\n")
+		return nil
+	}
+
+	fmt.Fprintf(os.Stderr, "Found %d asset entry(ies) in execution order:\n\n", len(items))
+	fmt.Fprintf(os.Stderr, "%-4s %-10s %-8s %-20s %s\n", "No.", "Priority", "Sequence", "Dir", "File")
+	fmt.Fprintf(os.Stderr, "%-4s %-10s %-8s %-20s %s\n", "----", "--------", "--------", "--------------------", "----")
+
+	for i, item := range items {
+		fmt.Fprintf(os.Stderr, "%-4d %-10d %-8d %-20s %s\n",
+			i+1,
+			item.Priority,
+			item.Sequence,
+			item.DirName,
+			filepath.Base(item.Entry.File),
+		)
+	}
+
+	fmt.Fprintf(os.Stderr, "\n")
+	return nil
+}
+
+func runAssetsExecute(cmd *cobra.Command, args []string) error {
+	fmt.Fprintf(os.Stderr, "\n=== Asset Manifests Execution ===\n")
+	fmt.Fprintf(os.Stderr, "Started at: %s\n", getCurrentTimestamp())
+	fmt.Fprintf(os.Stderr, "Directory: %s\n", assetsDir)
+	fmt.Fprintf(os.Stderr, "Database:  %s\n\n", maskPassword(assetsConn))
+
+	fmt.Fprintf(os.Stderr, "[1/2] Scanning asset manifests...\n")
+
+	items, err := assetloader.ScanDir(assetsDir)
+	if err != nil {
+		return fmt.Errorf("scanning directory: %w", err)
+	}
+
+	if len(items) == 0 {
+		fmt.Fprintf(os.Stderr, "      No asset manifests found. Nothing to execute.\n\n")
+		return nil
+	}
+
+	fmt.Fprintf(os.Stderr, "      ✓ Found %d asset entry(ies)\n\n", len(items))
+
+	fmt.Fprintf(os.Stderr, "[2/2] Executing assets in order (Priority → Sequence → Dir)...\n\n")
+
+	ctx := context.Background()
+	conn, err := pgsql.Connect(ctx, assetsConn, "assets-execute")
+	if err != nil {
+		return fmt.Errorf("connecting to database: %w", err)
+	}
+	defer conn.Close(ctx)
+
+	successCount := 0
+	var failures []struct {
+		item assetloader.Item
+		err  error
+	}
+
+	for _, item := range items {
+		name := filepath.Base(item.Entry.File)
+		fmt.Printf("Executing asset: %s (Priority=%d, Sequence=%d, Dir=%s)\n",
+			name, item.Priority, item.Sequence, item.DirName)
+
+		if err := assetloader.ExecuteItem(ctx, conn, item); err != nil {
+			if assetsIgnoreErrors {
+				fmt.Printf("⚠ Error loading %s: %v (continuing due to --ignore-errors)\n", name, err)
+				failures = append(failures, struct {
+					item assetloader.Item
+					err  error
+				}{item, err})
+				continue
+			}
+			return fmt.Errorf("asset %s (Priority=%d, Sequence=%d): %w",
+				name, item.Priority, item.Sequence, err)
+		}
+
+		successCount++
+		fmt.Printf("✓ Successfully loaded: %s\n", name)
+	}
+
+	fmt.Fprintf(os.Stderr, "\n=== Execution Complete ===\n")
+	fmt.Fprintf(os.Stderr, "Completed at: %s\n", getCurrentTimestamp())
+	fmt.Fprintf(os.Stderr, "Total entries: %d\n", len(items))
+	fmt.Fprintf(os.Stderr, "Successful:    %d\n", successCount)
+	if len(failures) > 0 {
+		fmt.Fprintf(os.Stderr, "Failed:        %d\n", len(failures))
+		fmt.Fprintf(os.Stderr, "\n⚠ Failed Entries Summary (%d failed):\n", len(failures))
+		for i, f := range failures {
+			fmt.Fprintf(os.Stderr, "  %d. %s (Priority=%d, Sequence=%d)\n     Error: %v\n",
+				i+1, filepath.Base(f.item.Entry.File), f.item.Priority, f.item.Sequence, f.err)
+		}
+	}
+	fmt.Fprintf(os.Stderr, "\n")
+
+	return nil
+}

cmd/relspec/convert.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	stdjson "encoding/json"
 	"fmt"
 	"os"
 	"strings"
@@ -53,7 +54,9 @@ var (
 	convertSchemaFilter    string
 	convertFlattenSchema   bool
 	convertNullableTypes   string
+	convertNullableArrays  string
 	convertContinueOnError bool
+	convertExtraFields     string
 )
 
 var convertCmd = &cobra.Command{
@@ -177,8 +180,10 @@ func init() {
 	convertCmd.Flags().StringVar(&convertPackageName, "package", "", "Package name (for code generation formats like gorm/bun)")
 	convertCmd.Flags().StringVar(&convertSchemaFilter, "schema", "", "Filter to a specific schema by name (required for formats like dctx that only support single schemas)")
 	convertCmd.Flags().BoolVar(&convertFlattenSchema, "flatten-schema", false, "Flatten schema.table names to schema_table (useful for databases like SQLite that do not support schemas)")
-	convertCmd.Flags().StringVar(&convertNullableTypes, "types", "", "Nullable type package for code-gen writers (bun/gorm): 'resolvespec' (default) or 'stdlib' (database/sql)")
+	convertCmd.Flags().StringVar(&convertNullableTypes, "types", "", "Nullable type package for code-gen writers (bun/gorm): 'baselib' (default, Go pointer types), 'stdlib' (database/sql), or 'sqltypes'")
+	convertCmd.Flags().StringVar(&convertNullableArrays, "array-nullable", "", "Nullable PostgreSQL array representation for the Bun writer in stdlib/baselib --types mode: 'slice' (default, plain slice) or 'pointer_slice' (*[]T, distinguishes NULL from '{}')")
 	convertCmd.Flags().BoolVar(&convertContinueOnError, "continue-on-error", false, "Prepend \\set ON_ERROR_STOP off to generated SQL so psql continues past errors (pgsql output only)")
+	convertCmd.Flags().StringVar(&convertExtraFields, "extra-fields", "", "Path to JSON file containing extra Bun model fields to inject (bun output only); fields support target_table, name, type, bun_tag, json_tag, comment")
 
 	err := convertCmd.MarkFlagRequired("from")
 	if err != nil {
@@ -245,7 +250,7 @@ func runConvert(cmd *cobra.Command, args []string) error {
 		fmt.Fprintf(os.Stderr, "      Schema: %s\n", convertSchemaFilter)
 	}
 
-	if err := writeDatabase(db, convertTargetType, convertTargetPath, convertPackageName, convertSchemaFilter, convertFlattenSchema, convertNullableTypes, convertContinueOnError); err != nil {
+	if err := writeDatabase(db, convertTargetType, convertTargetPath, convertPackageName, convertSchemaFilter, convertFlattenSchema, convertNullableTypes, convertNullableArrays, convertContinueOnError, convertExtraFields); err != nil {
 		return fmt.Errorf("failed to write target: %w", err)
 	}
 
@@ -385,10 +390,30 @@ func readDatabaseForConvert(dbType, filePath, connString string) (*models.Databa
 	return db, nil
 }
 
-func writeDatabase(db *models.Database, dbType, outputPath, packageName, schemaFilter string, flattenSchema bool, nullableTypes string, continueOnError bool) error {
+func writeDatabase(db *models.Database, dbType, outputPath, packageName, schemaFilter string, flattenSchema bool, nullableTypes, nullableArrays string, continueOnError bool, extraFields string) error {
 	var writer writers.Writer
 
-	writerOpts := newWriterOptions(outputPath, packageName, flattenSchema, nullableTypes, continueOnError)
+	writerOpts := newWriterOptions(outputPath, packageName, flattenSchema, nullableTypes, nullableArrays, continueOnError)
+	if extraFields != "" {
+		if !strings.EqualFold(dbType, "bun") {
+			return fmt.Errorf("--extra-fields is only supported for Bun output")
+		}
+		extraFieldsJSON, err := os.ReadFile(extraFields)
+		if err != nil {
+			return fmt.Errorf("failed to read --extra-fields file %q: %w", extraFields, err)
+		}
+
+		var parsed []wbun.ExtraFieldConfig
+		if err := stdjson.Unmarshal(extraFieldsJSON, &parsed); err != nil {
+			return fmt.Errorf("invalid --extra-fields JSON in %q: %w", extraFields, err)
+		}
+		if len(parsed) == 0 {
+			return fmt.Errorf("--extra-fields must contain at least one field")
+		}
+		writerOpts.Metadata = map[string]interface{}{
+			"extra_fields": string(extraFieldsJSON),
+		}
+	}
 
 	switch strings.ToLower(dbType) {
 	case "dbml":

cmd/relspec/edit.go

@@ -323,31 +323,31 @@ func writeDatabaseForEdit(dbType, filePath, connString string, db *models.Databa
 
 	switch strings.ToLower(dbType) {
 	case "dbml":
-		writer = wdbml.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wdbml.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "dctx":
-		writer = wdctx.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wdctx.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "drawdb":
-		writer = wdrawdb.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wdrawdb.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "graphql":
-		writer = wgraphql.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wgraphql.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "json":
-		writer = wjson.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wjson.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "yaml":
-		writer = wyaml.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wyaml.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "gorm":
-		writer = wgorm.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wgorm.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "bun":
-		writer = wbun.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wbun.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "drizzle":
-		writer = wdrizzle.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wdrizzle.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "prisma":
-		writer = wprisma.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wprisma.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "typeorm":
-		writer = wtypeorm.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wtypeorm.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "sqlite", "sqlite3":
-		writer = wsqlite.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wsqlite.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	case "pgsql":
-		writer = wpgsql.NewWriter(newWriterOptions(filePath, "", false, "", false))
+		writer = wpgsql.NewWriter(newWriterOptions(filePath, "", false, "", "", false))
 	default:
 		return fmt.Errorf("%s: unsupported format: %s", label, dbType)
 	}

cmd/relspec/merge.go

@@ -375,61 +375,61 @@ func writeDatabaseForMerge(dbType, filePath, connString string, db *models.Datab
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for DBML format", label)
 		}
-		writer = wdbml.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wdbml.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "dctx":
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for DCTX format", label)
 		}
-		writer = wdctx.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wdctx.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "drawdb":
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for DrawDB format", label)
 		}
-		writer = wdrawdb.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wdrawdb.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "graphql":
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for GraphQL format", label)
 		}
-		writer = wgraphql.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wgraphql.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "json":
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for JSON format", label)
 		}
-		writer = wjson.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wjson.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "yaml":
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for YAML format", label)
 		}
-		writer = wyaml.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wyaml.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "gorm":
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for GORM format", label)
 		}
-		writer = wgorm.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wgorm.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "bun":
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for Bun format", label)
 		}
-		writer = wbun.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wbun.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "drizzle":
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for Drizzle format", label)
 		}
-		writer = wdrizzle.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wdrizzle.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "prisma":
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for Prisma format", label)
 		}
-		writer = wprisma.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wprisma.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "typeorm":
 		if filePath == "" {
 			return fmt.Errorf("%s: file path is required for TypeORM format", label)
 		}
-		writer = wtypeorm.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wtypeorm.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "sqlite", "sqlite3":
-		writer = wsqlite.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", false))
+		writer = wsqlite.NewWriter(newWriterOptions(filePath, "", flattenSchema, "", "", false))
 	case "pgsql":
-		writerOpts := newWriterOptions(filePath, "", flattenSchema, "", false)
+		writerOpts := newWriterOptions(filePath, "", flattenSchema, "", "", false)
 		if connString != "" {
 			writerOpts.Metadata = map[string]interface{}{
 				"connection_string": connString,

cmd/relspec/prisma_options.go

@@ -13,12 +13,13 @@ func newReaderOptions(filePath, connString string) *readers.ReaderOptions {
 	}
 }
 
-func newWriterOptions(outputPath, packageName string, flattenSchema bool, nullableTypes string, continueOnError bool) *writers.WriterOptions {
+func newWriterOptions(outputPath, packageName string, flattenSchema bool, nullableTypes, nullableArrays string, continueOnError bool) *writers.WriterOptions {
 	return &writers.WriterOptions{
 		OutputPath:      outputPath,
 		PackageName:     packageName,
 		FlattenSchema:   flattenSchema,
 		NullableTypes:   nullableTypes,
+		NullableArrays:  nullableArrays,
 		Prisma7:         prisma7,
 		ContinueOnError: continueOnError,
 	}

cmd/relspec/report.go

@@ -0,0 +1,243 @@
+package main
+
+import (
+	"bytes"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"runtime"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/spf13/cobra"
+)
+
+const (
+	reportAPIBase   = "https://git.warky.dev/api/v1/repos/wdevs/relspecgo/issues"
+	reportRateLimit = time.Minute
+	reportTokenB64  = "OGQ4ODlhNmY2ZjQ5NjY5OTA5MTJhYTIyZjcyNzExMTNjZTEyZTRhMQ=="
+	reportStateFile = "report_state.json"
+)
+
+var (
+	reportBody  string
+	reportName  string
+	reportEmail string
+)
+
+var reportCmd = &cobra.Command{
+	Use:   "report",
+	Short: "Report a bug or feature request against RelSpec",
+	Long:  "Report a bug or feature request directly to the RelSpec issue tracker.",
+}
+
+var reportBugCmd = &cobra.Command{
+	Use:   "bug <title>",
+	Short: "Report a bug",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return submitReport("Bug", args[0], reportBody, reportName, reportEmail)
+	},
+}
+
+var reportFeatureCmd = &cobra.Command{
+	Use:   "feature <title>",
+	Short: "Report a feature request",
+	Args:  cobra.ExactArgs(1),
+	RunE: func(cmd *cobra.Command, args []string) error {
+		return submitReport("Feature", args[0], reportBody, reportName, reportEmail)
+	},
+}
+
+func init() {
+	for _, c := range []*cobra.Command{reportBugCmd, reportFeatureCmd} {
+		c.Flags().StringVar(&reportBody, "body", "", "Detailed description of the report")
+		c.Flags().StringVar(&reportName, "name", "", "Optional name, if you'd like feedback on this report")
+		c.Flags().StringVar(&reportEmail, "email", "", "Optional email address, if you'd like feedback on this report")
+	}
+	reportCmd.AddCommand(reportBugCmd)
+	reportCmd.AddCommand(reportFeatureCmd)
+}
+
+type reportState struct {
+	LastReport time.Time `json:"last_report"`
+	MachineID  string    `json:"machine_id,omitempty"`
+}
+
+func reportStateDir() (string, error) {
+	configDir, err := os.UserConfigDir()
+	if err != nil {
+		return "", err
+	}
+	dir := filepath.Join(configDir, "relspec")
+	if err := os.MkdirAll(dir, 0o700); err != nil {
+		return "", err
+	}
+	return dir, nil
+}
+
+func loadReportState() (reportState, string, error) {
+	dir, err := reportStateDir()
+	if err != nil {
+		return reportState{}, "", err
+	}
+	path := filepath.Join(dir, reportStateFile)
+
+	var state reportState
+	data, err := os.ReadFile(path)
+	if err == nil {
+		_ = json.Unmarshal(data, &state)
+	}
+	return state, path, nil
+}
+
+func saveReportState(path string, state reportState) error {
+	data, err := json.MarshalIndent(state, "", "  ")
+	if err != nil {
+		return err
+	}
+	return os.WriteFile(path, data, 0o600)
+}
+
+// systemUniqueID returns the OS machine id, falling back to a locally
+// persisted UUID if the platform-specific id cannot be read.
+func systemUniqueID(state reportState, statePath string) (string, error) {
+	if id, err := osMachineID(); err == nil && id != "" {
+		return id, nil
+	}
+
+	if state.MachineID != "" {
+		return state.MachineID, nil
+	}
+
+	id := uuid.NewString()
+	state.MachineID = id
+	if err := saveReportState(statePath, state); err != nil {
+		return "", err
+	}
+	return id, nil
+}
+
+func osMachineID() (string, error) {
+	switch runtime.GOOS {
+	case "linux":
+		for _, path := range []string{"/etc/machine-id", "/var/lib/dbus/machine-id"} {
+			data, err := os.ReadFile(path)
+			if err == nil {
+				return strings.TrimSpace(string(data)), nil
+			}
+		}
+		return "", fmt.Errorf("no machine-id file found")
+	case "darwin":
+		out, err := exec.Command("ioreg", "-rd1", "-c", "IOPlatformExpertDevice").Output()
+		if err != nil {
+			return "", err
+		}
+		re := regexp.MustCompile(`"IOPlatformUUID"\s*=\s*"([^"]+)"`)
+		match := re.FindSubmatch(out)
+		if match == nil {
+			return "", fmt.Errorf("IOPlatformUUID not found")
+		}
+		return string(match[1]), nil
+	case "windows":
+		out, err := exec.Command("reg", "query", `HKLM\SOFTWARE\Microsoft\Cryptography`, "/v", "MachineGuid").Output()
+		if err != nil {
+			return "", err
+		}
+		re := regexp.MustCompile(`MachineGuid\s+REG_SZ\s+(\S+)`)
+		match := re.FindSubmatch(out)
+		if match == nil {
+			return "", fmt.Errorf("MachineGuid not found")
+		}
+		return string(match[1]), nil
+	default:
+		return "", fmt.Errorf("unsupported platform: %s", runtime.GOOS)
+	}
+}
+
+func reportToken() (string, error) {
+	decoded, err := base64.StdEncoding.DecodeString(reportTokenB64)
+	if err != nil {
+		return "", fmt.Errorf("decode report token: %w", err)
+	}
+	return string(decoded), nil
+}
+
+type createIssueRequest struct {
+	Title string `json:"title"`
+	Body  string `json:"body"`
+}
+
+func submitReport(kind, title, body, name, email string) error {
+	state, statePath, err := loadReportState()
+	if err != nil {
+		return fmt.Errorf("load report state: %w", err)
+	}
+
+	if !state.LastReport.IsZero() {
+		if wait := reportRateLimit - time.Since(state.LastReport); wait > 0 {
+			return fmt.Errorf("please wait %s before submitting another report", wait.Round(time.Second))
+		}
+	}
+
+	id, err := systemUniqueID(state, statePath)
+	if err != nil {
+		return fmt.Errorf("determine system id: %w", err)
+	}
+
+	token, err := reportToken()
+	if err != nil {
+		return err
+	}
+
+	fullTitle := fmt.Sprintf("[%s] %s (id: %s)", kind, title, id)
+
+	fullBody := body
+	if name != "" || email != "" {
+		var contact []string
+		if name != "" {
+			contact = append(contact, "Name: "+name)
+		}
+		if email != "" {
+			contact = append(contact, "Email: "+email)
+		}
+		fullBody = strings.TrimSpace(fullBody + "\n\n---\n" + strings.Join(contact, "\n"))
+	}
+
+	payload, err := json.Marshal(createIssueRequest{Title: fullTitle, Body: fullBody})
+	if err != nil {
+		return fmt.Errorf("build request: %w", err)
+	}
+
+	req, err := http.NewRequest(http.MethodPost, reportAPIBase, bytes.NewReader(payload))
+	if err != nil {
+		return fmt.Errorf("build request: %w", err)
+	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("Authorization", "token "+token)
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return fmt.Errorf("submit report: %w", err)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusCreated {
+		return fmt.Errorf("submit report: unexpected status %s", resp.Status)
+	}
+
+	state.LastReport = time.Now()
+	state.MachineID = id
+	if err := saveReportState(statePath, state); err != nil {
+		return fmt.Errorf("save report state: %w", err)
+	}
+
+	fmt.Printf("Report submitted: %s\n", fullTitle)
+	return nil
+}

cmd/relspec/root.go

@@ -64,10 +64,12 @@ func init() {
 	rootCmd.AddCommand(diffCmd)
 	rootCmd.AddCommand(inspectCmd)
 	rootCmd.AddCommand(scriptsCmd)
+	rootCmd.AddCommand(assetsCmd)
 	rootCmd.AddCommand(templCmd)
 	rootCmd.AddCommand(editCmd)
 	rootCmd.AddCommand(mergeCmd)
 	rootCmd.AddCommand(splitCmd)
 	rootCmd.AddCommand(versionCmd)
+	rootCmd.AddCommand(reportCmd)
 	rootCmd.PersistentFlags().BoolVar(&prisma7, "prisma7", false, "Use Prisma 7 generator conventions when reading/writing Prisma schemas")
 }

cmd/relspec/split.go

@@ -11,18 +11,19 @@ import (
 )
 
 var (
-	splitSourceType    string
+	splitSourceType     string
-	splitSourcePath    string
+	splitSourcePath     string
-	splitSourceConn    string
+	splitSourceConn     string
-	splitTargetType    string
+	splitTargetType     string
-	splitTargetPath    string
+	splitTargetPath     string
-	splitSchemas       string
+	splitSchemas        string
-	splitTables        string
+	splitTables         string
-	splitPackageName   string
+	splitPackageName    string
-	splitDatabaseName  string
+	splitDatabaseName   string
-	splitExcludeSchema string
+	splitExcludeSchema  string
-	splitExcludeTables string
+	splitExcludeTables  string
-	splitNullableTypes string
+	splitNullableTypes  string
+	splitNullableArrays string
 )
 
 var splitCmd = &cobra.Command{
@@ -111,7 +112,8 @@ func init() {
 	splitCmd.Flags().StringVar(&splitTables, "tables", "", "Comma-separated list of table names to include (case-insensitive)")
 	splitCmd.Flags().StringVar(&splitExcludeSchema, "exclude-schema", "", "Comma-separated list of schema names to exclude")
 	splitCmd.Flags().StringVar(&splitExcludeTables, "exclude-tables", "", "Comma-separated list of table names to exclude (case-insensitive)")
-	splitCmd.Flags().StringVar(&splitNullableTypes, "types", "", "Nullable type package for code-gen writers (bun/gorm): 'resolvespec' (default) or 'stdlib' (database/sql)")
+	splitCmd.Flags().StringVar(&splitNullableTypes, "types", "", "Nullable type package for code-gen writers (bun/gorm): 'baselib' (default, Go pointer types), 'stdlib' (database/sql), or 'sqltypes'")
+	splitCmd.Flags().StringVar(&splitNullableArrays, "array-nullable", "", "Nullable PostgreSQL array representation for the Bun writer in stdlib/baselib --types mode: 'slice' (default, plain slice) or 'pointer_slice' (*[]T, distinguishes NULL from '{}')")
 
 	err := splitCmd.MarkFlagRequired("from")
 	if err != nil {
@@ -188,7 +190,9 @@ func runSplit(cmd *cobra.Command, args []string) error {
 		"",    // no schema filter for split
 		false, // no flatten-schema for split
 		splitNullableTypes,
+		splitNullableArrays,
 		false, // no continue-on-error for split
+		"",    // no extra fields for split
 	)
 	if err != nil {
 		return fmt.Errorf("failed to write output: %w", err)

docs/SCRIPTS_COMMAND.md

@@ -85,6 +85,23 @@ migrations/
 
 All files will be found and executed in Priority→Sequence order regardless of directory structure.
 
+## External File Embedding
+
+Script SQL can embed nearby text or binary files before execution using `-- @embed` directives:
+
+```sql
+-- @embed: path=assets/message.txt var=:message mode=text
+-- @embed: path=assets/photo.bin var=:payload mode=base64
+INSERT INTO assets (message, payload)
+VALUES (:message, decode(:payload, 'base64')::bytea);
+```
+
+- `path`: File path resolved relative to the SQL file containing the directive
+- `var`: Named placeholder to replace, such as `:message`
+- `mode`: `text` embeds an escaped SQL string literal; `base64` embeds a base64 string literal
+
+The directive comment is removed from the SQL, and every matching placeholder is replaced before the script is listed or executed.
+
 ## Commands
 
 ### relspec scripts list

examples/bun/sql_core_masterprocess.go

@@ -3,17 +3,17 @@ package models_bun
 // //ModelCoreMasterprocess - Generated Table for Schema core
 // type ModelCoreMasterprocess struct {
 // 	bun.BaseModel                  `bun:"table:core.masterprocess,alias:masterprocess"`
-// 	Description                    resolvespec_common.SqlString `json:"description" bun:"description,type:citext,"`
+// 	Description                    sql_types.SqlString `json:"description" bun:"description,type:citext,"`
-// 	GUID                           resolvespec_common.SqlUUID   `json:"guid" bun:"guid,type:uuid,default:newid(),"`
+// 	GUID                           sql_types.SqlUUID   `json:"guid" bun:"guid,type:uuid,default:newid(),"`
-// 	Inactive                       resolvespec_common.SqlInt16  `json:"inactive" bun:"inactive,type:smallint,"`
+// 	Inactive                       sql_types.SqlInt16  `json:"inactive" bun:"inactive,type:smallint,"`
-// 	Jsonvalue                      resolvespec_common.SqlJSONB  `json:"jsonvalue" bun:"jsonvalue,type:jsonb,"`
+// 	Jsonvalue                      sql_types.SqlJSONB  `json:"jsonvalue" bun:"jsonvalue,type:jsonb,"`
-// 	Ridjsonschema                  resolvespec_common.SqlInt32  `json:"rid_jsonschema" bun:"rid_jsonschema,type:integer,"`
+// 	Ridjsonschema                  sql_types.SqlInt32  `json:"rid_jsonschema" bun:"rid_jsonschema,type:integer,"`
-// 	Ridmasterprocess               resolvespec_common.SqlInt32  `json:"rid_masterprocess" bun:"rid_masterprocess,type:integer,pk,default:nextval('core.identity_masterprocess_rid_masterprocess'::regclass),"`
+// 	Ridmasterprocess               sql_types.SqlInt32  `json:"rid_masterprocess" bun:"rid_masterprocess,type:integer,pk,default:nextval('core.identity_masterprocess_rid_masterprocess'::regclass),"`
-// 	Ridmastertypehubtype           resolvespec_common.SqlInt32  `json:"rid_mastertype_hubtype" bun:"rid_mastertype_hubtype,type:integer,"`
+// 	Ridmastertypehubtype           sql_types.SqlInt32  `json:"rid_mastertype_hubtype" bun:"rid_mastertype_hubtype,type:integer,"`
-// 	Ridmastertypeprocesstype       resolvespec_common.SqlInt32  `json:"rid_mastertype_processtype" bun:"rid_mastertype_processtype,type:integer,"`
+// 	Ridmastertypeprocesstype       sql_types.SqlInt32  `json:"rid_mastertype_processtype" bun:"rid_mastertype_processtype,type:integer,"`
-// 	Ridprogrammodule               resolvespec_common.SqlInt32  `json:"rid_programmodule" bun:"rid_programmodule,type:integer,"`
+// 	Ridprogrammodule               sql_types.SqlInt32  `json:"rid_programmodule" bun:"rid_programmodule,type:integer,"`
-// 	Sequenceno                     resolvespec_common.SqlInt32  `json:"sequenceno" bun:"sequenceno,type:integer,"`
+// 	Sequenceno                     sql_types.SqlInt32  `json:"sequenceno" bun:"sequenceno,type:integer,"`
-// 	Singleprocess                  resolvespec_common.SqlInt16  `json:"singleprocess" bun:"singleprocess,type:smallint,"`
+// 	Singleprocess                  sql_types.SqlInt16  `json:"singleprocess" bun:"singleprocess,type:smallint,"`
 // 	Updatecnt                      int64                        `json:"updatecnt" bun:"updatecnt,type:integer,default:0,"`
 // 	JSON                           *ModelCoreJsonschema         `json:"JSON,omitempty" bun:"rel:has-one,join:rid_jsonschema=rid_jsonschema"`
 // 	MTT_RID_MASTERTYPE_HUBTYPE     *ModelCoreMastertype         `json:"MTT_RID_MASTERTYPE_HUBTYPE,omitempty" bun:"rel:has-one,join:rid_mastertype_hubtype=rid_mastertype"`

examples/bun/sql_core_mastertask.go

@@ -3,26 +3,26 @@ package models_bun
 // //ModelCoreMastertask - Generated Table for Schema core
 // type ModelCoreMastertask struct {
 // 	bun.BaseModel          `bun:"table:core.mastertask,alias:mastertask"`
-// 	Allactionsmustcomplete resolvespec_common.SqlInt16  `json:"allactionsmustcomplete" bun:"allactionsmustcomplete,type:smallint,"`
+// 	Allactionsmustcomplete sql_types.SqlInt16  `json:"allactionsmustcomplete" bun:"allactionsmustcomplete,type:smallint,"`
-// 	Condition              resolvespec_common.SqlString `json:"condition" bun:"condition,type:citext,"`
+// 	Condition              sql_types.SqlString `json:"condition" bun:"condition,type:citext,"`
-// 	Description            resolvespec_common.SqlString `json:"description" bun:"description,type:citext,"`
+// 	Description            sql_types.SqlString `json:"description" bun:"description,type:citext,"`
-// 	Dueday                 resolvespec_common.SqlInt16  `json:"dueday" bun:"dueday,type:smallint,"`
+// 	Dueday                 sql_types.SqlInt16  `json:"dueday" bun:"dueday,type:smallint,"`
-// 	Dueoption              resolvespec_common.SqlString `json:"dueoption" bun:"dueoption,type:citext,"`
+// 	Dueoption              sql_types.SqlString `json:"dueoption" bun:"dueoption,type:citext,"`
-// 	Escalation             resolvespec_common.SqlInt32  `json:"escalation" bun:"escalation,type:integer,"`
+// 	Escalation             sql_types.SqlInt32  `json:"escalation" bun:"escalation,type:integer,"`
-// 	Escalationoption       resolvespec_common.SqlString `json:"escalationoption" bun:"escalationoption,type:citext,"`
+// 	Escalationoption       sql_types.SqlString `json:"escalationoption" bun:"escalationoption,type:citext,"`
-// 	GUID                   resolvespec_common.SqlUUID   `json:"guid" bun:"guid,type:uuid,default:newid(),"`
+// 	GUID                   sql_types.SqlUUID   `json:"guid" bun:"guid,type:uuid,default:newid(),"`
-// 	Inactive               resolvespec_common.SqlInt16  `json:"inactive" bun:"inactive,type:smallint,"`
+// 	Inactive               sql_types.SqlInt16  `json:"inactive" bun:"inactive,type:smallint,"`
-// 	Jsonvalue              resolvespec_common.SqlJSONB  `json:"jsonvalue" bun:"jsonvalue,type:jsonb,"`
+// 	Jsonvalue              sql_types.SqlJSONB  `json:"jsonvalue" bun:"jsonvalue,type:jsonb,"`
-// 	Mastertasknote         resolvespec_common.SqlString `json:"mastertasknote" bun:"mastertasknote,type:citext,"`
+// 	Mastertasknote         sql_types.SqlString `json:"mastertasknote" bun:"mastertasknote,type:citext,"`
-// 	Repeatinterval         resolvespec_common.SqlInt16  `json:"repeatinterval" bun:"repeatinterval,type:smallint,"`
+// 	Repeatinterval         sql_types.SqlInt16  `json:"repeatinterval" bun:"repeatinterval,type:smallint,"`
-// 	Repeattype             resolvespec_common.SqlString `json:"repeattype" bun:"repeattype,type:citext,"`
+// 	Repeattype             sql_types.SqlString `json:"repeattype" bun:"repeattype,type:citext,"`
-// 	Ridjsonschema          resolvespec_common.SqlInt32  `json:"rid_jsonschema" bun:"rid_jsonschema,type:integer,"`
+// 	Ridjsonschema          sql_types.SqlInt32  `json:"rid_jsonschema" bun:"rid_jsonschema,type:integer,"`
-// 	Ridmasterprocess       resolvespec_common.SqlInt32  `json:"rid_masterprocess" bun:"rid_masterprocess,type:integer,"`
+// 	Ridmasterprocess       sql_types.SqlInt32  `json:"rid_masterprocess" bun:"rid_masterprocess,type:integer,"`
-// 	Ridmastertask          resolvespec_common.SqlInt32  `json:"rid_mastertask" bun:"rid_mastertask,type:integer,pk,default:nextval('core.identity_mastertask_rid_mastertask'::regclass),"`
+// 	Ridmastertask          sql_types.SqlInt32  `json:"rid_mastertask" bun:"rid_mastertask,type:integer,pk,default:nextval('core.identity_mastertask_rid_mastertask'::regclass),"`
-// 	Ridmastertypetasktype  resolvespec_common.SqlInt32  `json:"rid_mastertype_tasktype" bun:"rid_mastertype_tasktype,type:integer,"`
+// 	Ridmastertypetasktype  sql_types.SqlInt32  `json:"rid_mastertype_tasktype" bun:"rid_mastertype_tasktype,type:integer,"`
-// 	Sequenceno             resolvespec_common.SqlInt32  `json:"sequenceno" bun:"sequenceno,type:integer,"`
+// 	Sequenceno             sql_types.SqlInt32  `json:"sequenceno" bun:"sequenceno,type:integer,"`
-// 	Singletask             resolvespec_common.SqlInt16  `json:"singletask" bun:"singletask,type:smallint,"`
+// 	Singletask             sql_types.SqlInt16  `json:"singletask" bun:"singletask,type:smallint,"`
-// 	Startday               resolvespec_common.SqlInt16  `json:"startday" bun:"startday,type:smallint,"`
+// 	Startday               sql_types.SqlInt16  `json:"startday" bun:"startday,type:smallint,"`
 // 	Updatecnt              int64                        `json:"updatecnt" bun:"updatecnt,type:integer,default:0,"`
 // 	JSON                   *ModelCoreJsonschema         `json:"JSON,omitempty" bun:"rel:has-one,join:rid_jsonschema=rid_jsonschema"`
 // 	MPR                    *ModelCoreMasterprocess      `json:"MPR,omitempty" bun:"rel:has-one,join:rid_masterprocess=rid_masterprocess"`

examples/bun/sql_core_mastertype.go

@@ -3,18 +3,18 @@ package models_bun
 // //ModelCoreMastertype - Generated Table for Schema core
 // type ModelCoreMastertype struct {
 // 	bun.BaseModel `bun:"table:core.mastertype,alias:mastertype"`
-// 	Category      resolvespec_common.SqlString `json:"category" bun:"category,type:citext,"`
+// 	Category      sql_types.SqlString `json:"category" bun:"category,type:citext,"`
-// 	Description   resolvespec_common.SqlString `json:"description" bun:"description,type:citext,"`
+// 	Description   sql_types.SqlString `json:"description" bun:"description,type:citext,"`
-// 	Disableedit   resolvespec_common.SqlInt16  `json:"disableedit" bun:"disableedit,type:smallint,"`
+// 	Disableedit   sql_types.SqlInt16  `json:"disableedit" bun:"disableedit,type:smallint,"`
-// 	Forprefix     resolvespec_common.SqlString `json:"forprefix" bun:"forprefix,type:citext,"`
+// 	Forprefix     sql_types.SqlString `json:"forprefix" bun:"forprefix,type:citext,"`
-// 	GUID          resolvespec_common.SqlUUID   `json:"guid" bun:"guid,type:uuid,default:newid(),"`
+// 	GUID          sql_types.SqlUUID   `json:"guid" bun:"guid,type:uuid,default:newid(),"`
-// 	Hidden        resolvespec_common.SqlInt16  `json:"hidden" bun:"hidden,type:smallint,"`
+// 	Hidden        sql_types.SqlInt16  `json:"hidden" bun:"hidden,type:smallint,"`
-// 	Inactive      resolvespec_common.SqlInt16  `json:"inactive" bun:"inactive,type:smallint,"`
+// 	Inactive      sql_types.SqlInt16  `json:"inactive" bun:"inactive,type:smallint,"`
-// 	Jsonvalue     resolvespec_common.SqlJSONB  `json:"jsonvalue" bun:"jsonvalue,type:jsonb,"`
+// 	Jsonvalue     sql_types.SqlJSONB  `json:"jsonvalue" bun:"jsonvalue,type:jsonb,"`
-// 	Mastertype    resolvespec_common.SqlString `json:"mastertype" bun:"mastertype,type:citext,"`
+// 	Mastertype    sql_types.SqlString `json:"mastertype" bun:"mastertype,type:citext,"`
-// 	Note          resolvespec_common.SqlString `json:"note" bun:"note,type:citext,"`
+// 	Note          sql_types.SqlString `json:"note" bun:"note,type:citext,"`
-// 	Ridmastertype resolvespec_common.SqlInt32  `json:"rid_mastertype" bun:"rid_mastertype,type:integer,pk,default:nextval('core.identity_mastertype_rid_mastertype'::regclass),"`
+// 	Ridmastertype sql_types.SqlInt32  `json:"rid_mastertype" bun:"rid_mastertype,type:integer,pk,default:nextval('core.identity_mastertype_rid_mastertype'::regclass),"`
-// 	Ridparent     resolvespec_common.SqlInt32  `json:"rid_parent" bun:"rid_parent,type:integer,"`
+// 	Ridparent     sql_types.SqlInt32  `json:"rid_parent" bun:"rid_parent,type:integer,"`
 // 	Updatecnt     int64                        `json:"updatecnt" bun:"updatecnt,type:integer,default:0,"`
 // 	MTT           *ModelCoreMastertype         `json:"MTT,omitempty" bun:"rel:has-one,join:rid_mastertype=rid_parent"`
 

examples/bun/sql_core_process.go

@@ -3,15 +3,15 @@ package models_bun
 // //ModelCoreProcess - Generated Table for Schema core
 // type ModelCoreProcess struct {
 // 	bun.BaseModel    `bun:"table:core.process,alias:process"`
-// 	Completedate     resolvespec_common.SqlDate   `json:"completedate" bun:"completedate,type:date,"`
+// 	Completedate     sql_types.SqlDate   `json:"completedate" bun:"completedate,type:date,"`
 // 	Completetime     types.CustomIntTime          `json:"completetime" bun:"completetime,type:integer,"`
-// 	Description      resolvespec_common.SqlString `json:"description" bun:"description,type:citext,"`
+// 	Description      sql_types.SqlString `json:"description" bun:"description,type:citext,"`
-// 	GUID             resolvespec_common.SqlUUID   `json:"guid" bun:"guid,type:uuid,default:newid(),"`
+// 	GUID             sql_types.SqlUUID   `json:"guid" bun:"guid,type:uuid,default:newid(),"`
-// 	Ridcompleteuser  resolvespec_common.SqlInt32  `json:"rid_completeuser" bun:"rid_completeuser,type:integer,"`
+// 	Ridcompleteuser  sql_types.SqlInt32  `json:"rid_completeuser" bun:"rid_completeuser,type:integer,"`
-// 	Ridhub           resolvespec_common.SqlInt32  `json:"rid_hub" bun:"rid_hub,type:integer,"`
+// 	Ridhub           sql_types.SqlInt32  `json:"rid_hub" bun:"rid_hub,type:integer,"`
-// 	Ridmasterprocess resolvespec_common.SqlInt32  `json:"rid_masterprocess" bun:"rid_masterprocess,type:integer,"`
+// 	Ridmasterprocess sql_types.SqlInt32  `json:"rid_masterprocess" bun:"rid_masterprocess,type:integer,"`
-// 	Ridprocess       resolvespec_common.SqlInt32  `json:"rid_process" bun:"rid_process,type:integer,pk,default:nextval('core.identity_process_rid_process'::regclass),"`
+// 	Ridprocess       sql_types.SqlInt32  `json:"rid_process" bun:"rid_process,type:integer,pk,default:nextval('core.identity_process_rid_process'::regclass),"`
-// 	Status           resolvespec_common.SqlString `json:"status" bun:"status,type:citext,"`
+// 	Status           sql_types.SqlString `json:"status" bun:"status,type:citext,"`
 // 	Updatecnt        int64                        `json:"updatecnt" bun:"updatecnt,type:integer,default:0,"`
 // 	HUB              *ModelCoreHub                `json:"HUB,omitempty" bun:"rel:has-one,join:rid_hub=rid_hub"`
 // 	MPR              *ModelCoreMasterprocess      `json:"MPR,omitempty" bun:"rel:has-one,join:rid_masterprocess=rid_masterprocess"`

go.mod

@@ -11,6 +11,7 @@ require (
 	github.com/spf13/cobra v1.10.2
 	github.com/stretchr/testify v1.11.1
 	github.com/uptrace/bun v1.2.18
+	github.com/uptrace/bun/dialect/pgdialect v1.2.18
 	golang.org/x/text v0.37.0
 	gopkg.in/yaml.v3 v3.0.1
 	modernc.org/sqlite v1.50.1
@@ -25,6 +26,7 @@ require (
 	github.com/inconshreveable/mousetrap v1.1.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
 	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
 	github.com/jinzhu/inflection v1.0.0 // indirect
 	github.com/kr/pretty v0.3.1 // indirect
 	github.com/lucasb-eyer/go-colorful v1.4.0 // indirect
@@ -41,6 +43,7 @@ require (
 	github.com/vmihailenco/msgpack/v5 v5.4.1 // indirect
 	github.com/vmihailenco/tagparser/v2 v2.0.0 // indirect
 	golang.org/x/crypto v0.51.0 // indirect
+	golang.org/x/sync v0.20.0 // indirect
 	golang.org/x/sys v0.44.0 // indirect
 	golang.org/x/term v0.43.0 // indirect
 	golang.org/x/tools v0.45.0 // indirect

go.sum

@@ -92,6 +92,8 @@ github.com/tmthrgd/go-hex v0.0.0-20190904060850-447a3041c3bc h1:9lRDQMhESg+zvGYm
 github.com/tmthrgd/go-hex v0.0.0-20190904060850-447a3041c3bc/go.mod h1:bciPuU6GHm1iF1pBvUfxfsH0Wmnc2VbpgvbI9ZWuIRs=
 github.com/uptrace/bun v1.2.18 h1:3HnRcMfS6OBPMG1eSOzlbFJ/X/AyMEJb7rMxE6VQvDU=
 github.com/uptrace/bun v1.2.18/go.mod h1:wNltaKJk4JtOt4SG5I5zmA7v0/Mzjh1+/S906Rayd3Y=
+github.com/uptrace/bun/dialect/pgdialect v1.2.18 h1:IZ6nM2+OYrL8lkEAy7UkSEZvoa3vluTAUlZfPtlRB2k=
+github.com/uptrace/bun/dialect/pgdialect v1.2.18/go.mod h1:Tqdf4QP1okrGYpXfodXvCOK6Ob1OOTwSaoAzCgBB3IU=
 github.com/vmihailenco/msgpack/v5 v5.4.1 h1:cQriyiUvjTwOHg8QZaPihLWeRAAVoCpE00IUPn0Bjt8=
 github.com/vmihailenco/msgpack/v5 v5.4.1/go.mod h1:GaZTsDaehaPpQVyxrf5mtQlH+pc21PIudVV/E3rRQok=
 github.com/vmihailenco/tagparser/v2 v2.0.0 h1:y09buUbR+b5aycVFQs/g70pqKVZNBmxwAhO7/IwNM9g=

linux/arch/PKGBUILD

@@ -1,6 +1,6 @@
 # Maintainer: Hein (Warky Devs) <hein@warky.dev>
 pkgname=relspec
-pkgver=1.0.59
+pkgver=1.0.66
 pkgrel=1
 pkgdesc="RelSpec is a comprehensive database relations management tool that reads, transforms, and writes database table specifications across multiple formats and ORMs."
 arch=('x86_64' 'aarch64')

linux/centos/relspec.spec

@@ -1,5 +1,5 @@
 Name:           relspec
-Version:        1.0.59
+Version:        1.0.66
 Release:        1%{?dist}
 Summary:        RelSpec is a comprehensive database relations management tool that reads, transforms, and writes database table specifications across multiple formats and ORMs.
 

pkg/assetloader/embed.go

@@ -0,0 +1,165 @@
+package assetloader
+
+import (
+	"encoding/base64"
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strconv"
+	"strings"
+	"unicode/utf8"
+)
+
+const ScriptSourcePathMetadataKey = "source_path"
+
+var (
+	embedDirectivePattern = regexp.MustCompile(`(?m)^\s*--\s*@embed:\s*(.+?)\s*$`)
+	embedAttrPattern      = regexp.MustCompile(`([a-zA-Z_][a-zA-Z0-9_]*)=("[^"]*"|'[^']*'|\S+)`)
+	embedVarPattern       = regexp.MustCompile(`^:[a-zA-Z_][a-zA-Z0-9_]*$`)
+)
+
+// ProcessEmbedDirectives expands SQL comments in the form:
+//
+//	-- @embed: path=... var=:... mode=text|base64
+//
+// Paths are resolved relative to sqlPath. Text mode embeds a quoted UTF-8 SQL
+// string literal. Base64 mode embeds a quoted base64 literal suitable for
+// decode(:var, 'base64').
+func ProcessEmbedDirectives(sqlPath, sql string) (string, error) {
+	directives := embedDirectivePattern.FindAllStringSubmatch(sql, -1)
+	if len(directives) == 0 {
+		return sql, nil
+	}
+
+	if sqlPath == "" {
+		return "", fmt.Errorf("sql path is required for embed directives")
+	}
+
+	result := embedDirectivePattern.ReplaceAllString(sql, "")
+	for i, directive := range directives {
+		literal, placeholder, err := embedDirectiveLiteral(sqlPath, directive[1], i+1)
+		if err != nil {
+			return "", err
+		}
+		if !embedPlaceholderPattern(placeholder).MatchString(result) {
+			return "", fmt.Errorf("%s embed directive %d: placeholder %s not found", sqlPath, i+1, placeholder)
+		}
+		result = replaceEmbedPlaceholder(result, placeholder, literal)
+	}
+
+	return result, nil
+}
+
+func embedDirectiveLiteral(sqlPath, raw string, directiveNumber int) (literal, placeholder string, err error) {
+	attrs, err := parseEmbedAttrs(raw)
+	if err != nil {
+		return "", "", fmt.Errorf("%s embed directive %d: %w", sqlPath, directiveNumber, err)
+	}
+
+	pathValue := attrs["path"]
+	varValue := attrs["var"]
+	modeValue := attrs["mode"]
+	if pathValue == "" {
+		return "", "", fmt.Errorf("%s embed directive %d: missing path", sqlPath, directiveNumber)
+	}
+	if !embedVarPattern.MatchString(varValue) {
+		return "", "", fmt.Errorf("%s embed directive %d: var must be a named placeholder like :asset", sqlPath, directiveNumber)
+	}
+	if modeValue != "text" && modeValue != "base64" {
+		return "", "", fmt.Errorf("%s embed directive %d: mode must be text or base64", sqlPath, directiveNumber)
+	}
+
+	resolved := filepath.Join(filepath.Dir(sqlPath), filepath.Clean(pathValue))
+	data, err := os.ReadFile(resolved)
+	if err != nil {
+		return "", "", fmt.Errorf("%s embed directive %d: reading %s: %w", sqlPath, directiveNumber, resolved, err)
+	}
+
+	switch modeValue {
+	case "text":
+		if !utf8.Valid(data) {
+			return "", "", fmt.Errorf("%s embed directive %d: %s is not valid UTF-8", sqlPath, directiveNumber, resolved)
+		}
+		literal, err := sqlStringLiteral(string(data))
+		if err != nil {
+			return "", "", fmt.Errorf("%s embed directive %d: %w", sqlPath, directiveNumber, err)
+		}
+		return literal, varValue, nil
+	case "base64":
+		literal, err := sqlStringLiteral(base64.StdEncoding.EncodeToString(data))
+		if err != nil {
+			return "", "", fmt.Errorf("%s embed directive %d: %w", sqlPath, directiveNumber, err)
+		}
+		return literal, varValue, nil
+	default:
+		return "", "", fmt.Errorf("%s embed directive %d: mode must be text or base64", sqlPath, directiveNumber)
+	}
+}
+
+func parseEmbedAttrs(raw string) (map[string]string, error) {
+	attrs := map[string]string{}
+	matches := embedAttrPattern.FindAllStringSubmatchIndex(raw, -1)
+	if len(matches) == 0 {
+		return nil, fmt.Errorf("expected path, var, and mode attributes")
+	}
+
+	lastEnd := 0
+	for _, match := range matches {
+		gap := strings.TrimSpace(raw[lastEnd:match[0]])
+		if gap != "" {
+			return nil, fmt.Errorf("invalid attribute syntax near %q", gap)
+		}
+
+		key := raw[match[2]:match[3]]
+		value := raw[match[4]:match[5]]
+		if _, exists := attrs[key]; exists {
+			return nil, fmt.Errorf("duplicate attribute %q", key)
+		}
+		unquoted, err := unquoteEmbedValue(value)
+		if err != nil {
+			return nil, fmt.Errorf("invalid %s value: %w", key, err)
+		}
+		attrs[key] = unquoted
+		lastEnd = match[1]
+	}
+	if tail := strings.TrimSpace(raw[lastEnd:]); tail != "" {
+		return nil, fmt.Errorf("invalid attribute syntax near %q", tail)
+	}
+
+	for key := range attrs {
+		if key != "path" && key != "var" && key != "mode" {
+			return nil, fmt.Errorf("unknown attribute %q", key)
+		}
+	}
+
+	return attrs, nil
+}
+
+func unquoteEmbedValue(value string) (string, error) {
+	if len(value) < 2 {
+		return value, nil
+	}
+	if value[0] == '"' {
+		return strconv.Unquote(value)
+	}
+	if value[0] == '\'' && value[len(value)-1] == '\'' {
+		return value[1 : len(value)-1], nil
+	}
+	return value, nil
+}
+
+func sqlStringLiteral(value string) (string, error) {
+	if strings.ContainsRune(value, '\x00') {
+		return "", fmt.Errorf("embedded text contains NUL byte")
+	}
+	return "'" + strings.ReplaceAll(value, "'", "''") + "'", nil
+}
+
+func replaceEmbedPlaceholder(sql, placeholder, literal string) string {
+	return embedPlaceholderPattern(placeholder).ReplaceAllString(sql, "${1}"+literal+"${2}")
+}
+
+func embedPlaceholderPattern(placeholder string) *regexp.Regexp {
+	return regexp.MustCompile(`(^|[^a-zA-Z0-9_:])` + regexp.QuoteMeta(placeholder) + `([^a-zA-Z0-9_]|$)`)
+}

pkg/assetloader/embed_test.go

@@ -0,0 +1,143 @@
+package assetloader
+
+import (
+	"encoding/base64"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+func TestProcessEmbedDirectives_TextLiteralEscapesQuotes(t *testing.T) {
+	dir := t.TempDir()
+	sqlPath := filepath.Join(dir, "1_001_seed.sql")
+	if err := os.WriteFile(filepath.Join(dir, "body.txt"), []byte("Line 1\nIt's fine"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := ProcessEmbedDirectives(sqlPath, `
+-- @embed: path=body.txt var=:body mode=text
+INSERT INTO notes (body) VALUES (:body);
+`)
+	if err != nil {
+		t.Fatalf("ProcessEmbedDirectives failed: %v", err)
+	}
+	if !strings.Contains(got, "VALUES ('Line 1\nIt''s fine');") {
+		t.Fatalf("embedded SQL did not contain escaped text literal:\n%s", got)
+	}
+	if strings.Contains(got, "VALUES (:body);") {
+		t.Fatalf("placeholder was not replaced:\n%s", got)
+	}
+}
+
+func TestProcessEmbedDirectives_Base64Literal(t *testing.T) {
+	dir := t.TempDir()
+	sqlPath := filepath.Join(dir, "1_001_seed.sql")
+	binary := []byte{0x00, 0xff, 0x10, 0x20}
+	if err := os.WriteFile(filepath.Join(dir, "blob.bin"), binary, 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := ProcessEmbedDirectives(sqlPath, `
+-- @embed: path=blob.bin var=:payload mode=base64
+INSERT INTO files (payload) VALUES (decode(:payload, 'base64')::bytea);
+`)
+	if err != nil {
+		t.Fatalf("ProcessEmbedDirectives failed: %v", err)
+	}
+	want := "decode('" + base64.StdEncoding.EncodeToString(binary) + "', 'base64')::bytea"
+	if !strings.Contains(got, want) {
+		t.Fatalf("embedded SQL did not contain base64 literal %q:\n%s", want, got)
+	}
+}
+
+func TestProcessEmbedDirectives_RelativeToSQLFile(t *testing.T) {
+	root := t.TempDir()
+	sqlDir := filepath.Join(root, "nested", "seed")
+	if err := os.MkdirAll(filepath.Join(sqlDir, "assets"), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	sqlPath := filepath.Join(sqlDir, "1_001_seed.sql")
+	if err := os.WriteFile(filepath.Join(sqlDir, "assets", "body.txt"), []byte("relative body"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := ProcessEmbedDirectives(sqlPath, `
+-- @embed: path=assets/body.txt var=:body mode=text
+SELECT :body;
+`)
+	if err != nil {
+		t.Fatalf("ProcessEmbedDirectives failed: %v", err)
+	}
+	if !strings.Contains(got, "SELECT 'relative body';") {
+		t.Fatalf("path was not resolved relative to SQL file:\n%s", got)
+	}
+}
+
+func TestProcessEmbedDirectives_InvalidDirectiveAndFiles(t *testing.T) {
+	dir := t.TempDir()
+	sqlPath := filepath.Join(dir, "1_001_seed.sql")
+	if err := os.WriteFile(filepath.Join(dir, "body.txt"), []byte("ok"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(dir, "binary.txt"), []byte{0xff, 0xfe}, 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	tests := []struct {
+		name string
+		sql  string
+	}{
+		{
+			name: "missing mode",
+			sql:  "-- @embed: path=body.txt var=:body\nSELECT :body;",
+		},
+		{
+			name: "invalid var",
+			sql:  "-- @embed: path=body.txt var=body mode=text\nSELECT :body;",
+		},
+		{
+			name: "missing file",
+			sql:  "-- @embed: path=missing.txt var=:body mode=text\nSELECT :body;",
+		},
+		{
+			name: "invalid utf8 text",
+			sql:  "-- @embed: path=binary.txt var=:body mode=text\nSELECT :body;",
+		},
+		{
+			name: "placeholder not found",
+			sql:  "-- @embed: path=body.txt var=:body mode=text\nSELECT 1;",
+		},
+		{
+			name: "unknown attribute",
+			sql:  "-- @embed: path=body.txt var=:body mode=text extra=yes\nSELECT :body;",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if _, err := ProcessEmbedDirectives(sqlPath, tt.sql); err == nil {
+				t.Fatal("expected error, got nil")
+			}
+		})
+	}
+}
+
+func TestProcessEmbedDirectives_DoesNotReplacePlaceholderPrefix(t *testing.T) {
+	dir := t.TempDir()
+	sqlPath := filepath.Join(dir, "1_001_seed.sql")
+	if err := os.WriteFile(filepath.Join(dir, "body.txt"), []byte("ok"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	got, err := ProcessEmbedDirectives(sqlPath, `
+-- @embed: path=body.txt var=:body mode=text
+SELECT :body, :body_extra;
+`)
+	if err != nil {
+		t.Fatalf("ProcessEmbedDirectives failed: %v", err)
+	}
+	if !strings.Contains(got, "SELECT 'ok', :body_extra;") {
+		t.Fatalf("placeholder boundary was not respected:\n%s", got)
+	}
+}

pkg/assetloader/executor.go

@@ -0,0 +1,106 @@
+package assetloader
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"strings"
+
+	"github.com/jackc/pgx/v5"
+)
+
+// namedPlaceholder matches :identifier patterns (but not ::cast syntax).
+var namedPlaceholder = regexp.MustCompile(`:([a-zA-Z_][a-zA-Z0-9_]*)`)
+
+// pgCastMarker temporarily replaces :: to protect PostgreSQL cast syntax.
+const pgCastMarker = "\x00PGCAST\x00"
+
+// BuildQuery converts a SQL call that uses :name named placeholders into a
+// pgx-compatible positional-parameter query ($1, $2, …) and returns the
+// corresponding argument slice.
+//
+// Built-in placeholders:
+//   - :bytes    → fileBytes ([]byte)
+//   - :filename → filename (string, base name only)
+//   - :any_key  → staticParams["any_key"] (string)
+//
+// A placeholder that appears more than once maps to the same $N. An unknown
+// placeholder (not built-in and not in staticParams) returns an error.
+// PostgreSQL cast syntax (::type) is left untouched.
+func BuildQuery(call string, fileBytes []byte, filename string, staticParams map[string]string) (query string, args []any, err error) {
+	// Protect :: casts before running the placeholder regex.
+	protected := strings.ReplaceAll(call, "::", pgCastMarker)
+
+	paramIndex := map[string]int{} // name → 1-based position
+	var firstErr error
+
+	query = namedPlaceholder.ReplaceAllStringFunc(protected, func(match string) string {
+		if firstErr != nil {
+			return match
+		}
+		name := match[1:] // strip leading ':'
+
+		// Return existing positional param for repeated placeholders.
+		if idx, seen := paramIndex[name]; seen {
+			return fmt.Sprintf("$%d", idx)
+		}
+
+		// Resolve the placeholder value.
+		var val any
+		switch name {
+		case "bytes":
+			val = fileBytes
+		case "filename":
+			val = filename
+		default:
+			if staticParams != nil {
+				if v, ok := staticParams[name]; ok {
+					val = v
+				}
+			}
+			if val == nil {
+				firstErr = fmt.Errorf("unknown placeholder %q in SQL call (not a built-in and not listed in params)", match)
+				return match
+			}
+		}
+
+		idx := len(args) + 1
+		paramIndex[name] = idx
+		args = append(args, val)
+		return fmt.Sprintf("$%d", idx)
+	})
+
+	if firstErr != nil {
+		return "", nil, firstErr
+	}
+
+	// Restore :: casts.
+	query = strings.ReplaceAll(query, pgCastMarker, "::")
+
+	return query, args, nil
+}
+
+// ExecuteItem reads the asset file referenced by item.Entry.File (which is the
+// absolute path set by ScanDir) and executes the configured SQL call via conn.
+// The file's raw bytes are bound as a []byte parameter — no encoding or escaping.
+func ExecuteItem(ctx context.Context, conn *pgx.Conn, item Item) error {
+	data, err := os.ReadFile(item.Entry.File)
+	if err != nil {
+		return fmt.Errorf("reading asset file %s: %w", item.Entry.File, err)
+	}
+
+	filename := filepath.Base(item.Entry.File)
+
+	sql, args, err := BuildQuery(item.Entry.Call, data, filename, item.Entry.Params)
+	if err != nil {
+		return fmt.Errorf("building query for %s: %w", filename, err)
+	}
+
+	if _, err := conn.Exec(ctx, sql, args...); err != nil {
+		return fmt.Errorf("executing asset %s: %w", filename, err)
+	}
+
+	return nil
+}

pkg/assetloader/loader.go

@@ -0,0 +1,200 @@
+// Package assetloader implements a native Go asset/file loader that binds
+// local binary and text files as pgx query parameters during database seeding.
+// Files are bound as actual []byte query parameters — never converted to SQL
+// text literals — so binary data stays byte-exact and no escaping is needed.
+//
+// Manifests are small YAML files (assets.yaml) that describe, per file, the
+// SQL call to invoke and the named placeholders for :bytes, :filename, and any
+// static column values. Manifests live inside directories that follow the same
+// {priority}_{sequence}_{name} naming convention used by the sqldir reader,
+// so asset-loading steps can be interleaved with SQL scripts in a migrate-apply
+// run.
+package assetloader
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"regexp"
+	"sort"
+	"strconv"
+	"strings"
+
+	"gopkg.in/yaml.v3"
+)
+
+// ManifestEntry describes a single file to load from an assets.yaml manifest.
+type ManifestEntry struct {
+	// File is the path to the asset file, relative to the manifest directory.
+	File string `yaml:"file"`
+	// Call is the SQL statement to execute. Use :bytes for file content,
+	// :filename for the base name, and :param_name for static params.
+	Call string `yaml:"call"`
+	// Params holds optional static named parameters referenced in Call.
+	Params map[string]string `yaml:"params,omitempty"`
+}
+
+// Item combines a manifest entry with its ordering metadata and the resolved
+// directory where the manifest and asset file reside.
+type Item struct {
+	// Priority and Sequence come from the parent directory's naming pattern.
+	Priority int
+	Sequence uint
+	// DirName is the last path component of the manifest's directory.
+	DirName string
+	// Dir is the absolute path to the directory containing assets.yaml and files.
+	Dir string
+	// Entry is the parsed manifest entry.
+	Entry ManifestEntry
+}
+
+// dirPattern matches {priority}_{sequence}_{name} or {priority}-{sequence}-{name}
+// directory names, e.g. "1_010_seed_templates" or "2-001-branding".
+var dirPattern = regexp.MustCompile(`^(\d+)[_-](\d+)[_-](.+)$`)
+
+// LoadManifest reads and parses the assets.yaml file in dir, returning
+// the ordered list of manifest entries. Returns an error if assets.yaml is
+// absent or contains invalid YAML.
+func LoadManifest(dir string) ([]ManifestEntry, error) {
+	manifestPath := filepath.Join(dir, "assets.yaml")
+	data, err := os.ReadFile(manifestPath)
+	if err != nil {
+		return nil, fmt.Errorf("reading %s: %w", manifestPath, err)
+	}
+
+	var entries []ManifestEntry
+	if err := yaml.Unmarshal(data, &entries); err != nil {
+		return nil, fmt.Errorf("parsing %s: %w", manifestPath, err)
+	}
+
+	return entries, nil
+}
+
+// ScanDir recursively walks baseDir, finds all assets.yaml manifests, resolves
+// each file entry (skipping symlinks and path traversal), and returns the
+// resulting Items sorted by (Priority, Sequence, DirName).
+//
+// Each manifest must reside in a directory whose name follows the
+// {priority}_{sequence}_{name} pattern. Manifests in directories that do not
+// follow this convention are assigned Priority=0, Sequence=0 and sorted last.
+func ScanDir(baseDir string) ([]Item, error) {
+	absBase, err := filepath.Abs(baseDir)
+	if err != nil {
+		return nil, fmt.Errorf("resolving base dir: %w", err)
+	}
+
+	var items []Item
+
+	err = filepath.WalkDir(absBase, func(path string, d os.DirEntry, walkErr error) error {
+		if walkErr != nil {
+			return walkErr
+		}
+		if d.IsDir() {
+			return nil
+		}
+		if d.Name() != "assets.yaml" {
+			return nil
+		}
+
+		manifestDir := filepath.Dir(path)
+		priority, sequence, dirName := parseDirName(filepath.Base(manifestDir))
+
+		entries, err := LoadManifest(manifestDir)
+		if err != nil {
+			return fmt.Errorf("loading manifest in %s: %w", manifestDir, err)
+		}
+
+		for _, entry := range entries {
+			if entry.File == "" || entry.Call == "" {
+				continue
+			}
+
+			// Resolve and validate the asset file path.
+			resolved, skip, err := resolveAssetPath(absBase, manifestDir, entry.File)
+			if err != nil {
+				return err
+			}
+			if skip {
+				continue
+			}
+
+			items = append(items, Item{
+				Priority: priority,
+				Sequence: sequence,
+				DirName:  dirName,
+				Dir:      manifestDir,
+				Entry: ManifestEntry{
+					File:   resolved, // absolute path, safe to read
+					Call:   entry.Call,
+					Params: entry.Params,
+				},
+			})
+		}
+
+		return nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	sort.SliceStable(items, func(i, j int) bool {
+		if items[i].Priority != items[j].Priority {
+			return items[i].Priority < items[j].Priority
+		}
+		if items[i].Sequence != items[j].Sequence {
+			return items[i].Sequence < items[j].Sequence
+		}
+		return items[i].DirName < items[j].DirName
+	})
+
+	return items, nil
+}
+
+// parseDirName extracts (priority, sequence, name) from a directory name that
+// follows the {priority}[_-]{sequence}[_-]{name} convention. Returns (0, 0, dir)
+// when the name does not match.
+func parseDirName(dir string) (priority int, sequence uint, name string) {
+	m := dirPattern.FindStringSubmatch(dir)
+	if m == nil {
+		return 0, 0, dir
+	}
+	p, _ := strconv.Atoi(m[1])
+	s, _ := strconv.ParseUint(m[2], 10, 64)
+	return p, uint(s), m[3]
+}
+
+// resolveAssetPath resolves a manifest-relative file path and checks that:
+//   - it does not escape the base directory (path traversal prevention)
+//   - none of its path components are symlinks
+//
+// Returns the absolute path, a skip flag (true when the entry should be silently
+// dropped), and any hard error.
+func resolveAssetPath(absBase, manifestDir, file string) (absPath string, skip bool, err error) {
+	// Clean and join before any symlink resolution so we can detect traversal.
+	joined := filepath.Join(manifestDir, filepath.Clean(file))
+
+	// Ensure the cleaned path is still inside absBase.
+	rel, err := filepath.Rel(absBase, joined)
+	if err != nil || strings.HasPrefix(rel, "..") {
+		// Path escapes the base directory; skip silently.
+		return "", true, nil
+	}
+
+	// Walk each component to detect symlinks.
+	parts := strings.Split(rel, string(filepath.Separator))
+	current := absBase
+	for _, part := range parts {
+		current = filepath.Join(current, part)
+		info, statErr := os.Lstat(current)
+		if statErr != nil {
+			// File doesn't exist; skip.
+			return "", true, nil
+		}
+		if info.Mode()&os.ModeSymlink != 0 {
+			// Symlink in path; skip silently.
+			return "", true, nil
+		}
+	}
+
+	return joined, false, nil
+}

pkg/assetloader/loader_test.go

@@ -0,0 +1,341 @@
+package assetloader_test
+
+import (
+	"os"
+	"path/filepath"
+	"testing"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/assetloader"
+)
+
+func TestLoadManifest_ValidList(t *testing.T) {
+	dir := t.TempDir()
+	writeFile(t, dir, "assets.yaml", `
+- file: hello.txt
+  call: INSERT INTO files (name, data) VALUES (:filename, :bytes)
+- file: logo.png
+  call: UPDATE branding SET logo = :bytes WHERE id = 1
+`)
+	writeFile(t, dir, "hello.txt", "hello world")
+	writeFile(t, dir, "logo.png", "\x89PNG\r\n\x1a\n")
+
+	m, err := assetloader.LoadManifest(dir)
+	if err != nil {
+		t.Fatalf("LoadManifest failed: %v", err)
+	}
+	if len(m) != 2 {
+		t.Fatalf("expected 2 entries, got %d", len(m))
+	}
+	if m[0].File != "hello.txt" {
+		t.Errorf("entry 0 file: got %q, want %q", m[0].File, "hello.txt")
+	}
+	if m[1].File != "logo.png" {
+		t.Errorf("entry 1 file: got %q, want %q", m[1].File, "logo.png")
+	}
+}
+
+func TestLoadManifest_WithStaticParams(t *testing.T) {
+	dir := t.TempDir()
+	writeFile(t, dir, "assets.yaml", `
+- file: template.md
+  call: INSERT INTO templates (owner_id, name, data) VALUES (:owner_id, :filename, :bytes)
+  params:
+    owner_id: "42"
+`)
+	writeFile(t, dir, "template.md", "# Template")
+
+	m, err := assetloader.LoadManifest(dir)
+	if err != nil {
+		t.Fatalf("LoadManifest failed: %v", err)
+	}
+	if len(m) != 1 {
+		t.Fatalf("expected 1 entry, got %d", len(m))
+	}
+	if m[0].Params["owner_id"] != "42" {
+		t.Errorf("static param owner_id: got %q, want %q", m[0].Params["owner_id"], "42")
+	}
+}
+
+func TestLoadManifest_MissingFile(t *testing.T) {
+	dir := t.TempDir()
+	// No assets.yaml present
+	_, err := assetloader.LoadManifest(dir)
+	if err == nil {
+		t.Fatal("expected error for missing assets.yaml, got nil")
+	}
+}
+
+func TestLoadManifest_InvalidYAML(t *testing.T) {
+	dir := t.TempDir()
+	writeFile(t, dir, "assets.yaml", `{not: [valid yaml`)
+	_, err := assetloader.LoadManifest(dir)
+	if err == nil {
+		t.Fatal("expected error for invalid YAML, got nil")
+	}
+}
+
+func TestScanDir_FindsManifests(t *testing.T) {
+	root := t.TempDir()
+
+	// Directory named with priority-sequence pattern
+	dir1 := filepath.Join(root, "1_010_seed_templates")
+	if err := os.MkdirAll(dir1, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	writeFile(t, dir1, "assets.yaml", `
+- file: a.txt
+  call: INSERT INTO t (data) VALUES (:bytes)
+`)
+	writeFile(t, dir1, "a.txt", "aaa")
+
+	dir2 := filepath.Join(root, "2_001_branding")
+	if err := os.MkdirAll(dir2, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	writeFile(t, dir2, "assets.yaml", `
+- file: logo.png
+  call: UPDATE branding SET logo = :bytes
+`)
+	writeFile(t, dir2, "logo.png", "PNG")
+
+	items, err := assetloader.ScanDir(root)
+	if err != nil {
+		t.Fatalf("ScanDir failed: %v", err)
+	}
+	if len(items) != 2 {
+		t.Fatalf("expected 2 items, got %d", len(items))
+	}
+	// Should be ordered by priority then sequence
+	if items[0].Priority != 1 || items[0].Sequence != 10 {
+		t.Errorf("item[0]: got priority=%d seq=%d, want 1,10", items[0].Priority, items[0].Sequence)
+	}
+	if items[1].Priority != 2 || items[1].Sequence != 1 {
+		t.Errorf("item[1]: got priority=%d seq=%d, want 2,1", items[1].Priority, items[1].Sequence)
+	}
+}
+
+func TestScanDir_OrdersByPriorityThenSequence(t *testing.T) {
+	root := t.TempDir()
+
+	for _, d := range []string{"2_002_b", "1_001_a", "2_001_c", "1_002_d"} {
+		dir := filepath.Join(root, d)
+		if err := os.MkdirAll(dir, 0o755); err != nil {
+			t.Fatal(err)
+		}
+		writeFile(t, dir, "assets.yaml", `
+- file: x.txt
+  call: SELECT :bytes
+`)
+		writeFile(t, dir, "x.txt", "x")
+	}
+
+	items, err := assetloader.ScanDir(root)
+	if err != nil {
+		t.Fatalf("ScanDir failed: %v", err)
+	}
+	if len(items) != 4 {
+		t.Fatalf("expected 4 items, got %d", len(items))
+	}
+
+	type ps struct{ p int; s uint }
+	want := []ps{{1, 1}, {1, 2}, {2, 1}, {2, 2}}
+	for i, w := range want {
+		got := ps{items[i].Priority, items[i].Sequence}
+		if got != w {
+			t.Errorf("items[%d]: got {%d,%d}, want {%d,%d}", i, got.p, got.s, w.p, w.s)
+		}
+	}
+}
+
+func TestScanDir_SkipsSymlinks(t *testing.T) {
+	root := t.TempDir()
+
+	dir1 := filepath.Join(root, "1_001_real")
+	if err := os.MkdirAll(dir1, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	writeFile(t, dir1, "assets.yaml", `
+- file: a.txt
+  call: SELECT :bytes
+`)
+	writeFile(t, dir1, "a.txt", "real")
+
+	// Symlink to an asset file - should be skipped during file read
+	realFile := filepath.Join(root, "real.txt")
+	writeFile(t, root, "real.txt", "symlink target")
+	symlink := filepath.Join(dir1, "link.txt")
+	if err := os.Symlink(realFile, symlink); err != nil {
+		t.Skip("symlinks not supported:", err)
+	}
+
+	// Add a manifest entry that references the symlink
+	writeFile(t, dir1, "assets.yaml", `
+- file: a.txt
+  call: SELECT :bytes
+- file: link.txt
+  call: SELECT :bytes
+`)
+
+	items, err := assetloader.ScanDir(root)
+	if err != nil {
+		t.Fatalf("ScanDir failed: %v", err)
+	}
+	// The symlink entry should be skipped; only a.txt should remain
+	if len(items) != 1 {
+		t.Fatalf("expected 1 item after symlink skip, got %d", len(items))
+	}
+	if filepath.Base(items[0].Entry.File) != "a.txt" {
+		t.Errorf("expected non-symlink entry, got %q", items[0].Entry.File)
+	}
+}
+
+func TestScanDir_RejectsPathTraversal(t *testing.T) {
+	root := t.TempDir()
+
+	dir1 := filepath.Join(root, "1_001_evil")
+	if err := os.MkdirAll(dir1, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	writeFile(t, dir1, "assets.yaml", `
+- file: ../../etc/passwd
+  call: SELECT :bytes
+`)
+
+	items, err := assetloader.ScanDir(root)
+	if err != nil {
+		t.Fatalf("ScanDir failed: %v", err)
+	}
+	// Path traversal entry should be skipped
+	if len(items) != 0 {
+		t.Fatalf("expected 0 items after path traversal rejection, got %d", len(items))
+	}
+}
+
+func TestBuildQuery_BasicPlaceholders(t *testing.T) {
+	sql, args, err := assetloader.BuildQuery(
+		"INSERT INTO t (name, data) VALUES (:filename, :bytes)",
+		[]byte("hello"),
+		"hello.txt",
+		nil,
+	)
+	if err != nil {
+		t.Fatalf("BuildQuery failed: %v", err)
+	}
+	if sql != "INSERT INTO t (name, data) VALUES ($1, $2)" {
+		t.Errorf("unexpected SQL: %s", sql)
+	}
+	if len(args) != 2 {
+		t.Fatalf("expected 2 args, got %d", len(args))
+	}
+	if string(args[0].(string)) != "hello.txt" {
+		t.Errorf("args[0]: got %q, want %q", args[0], "hello.txt")
+	}
+	if string(args[1].([]byte)) != "hello" {
+		t.Errorf("args[1]: got %v, want %v", args[1], []byte("hello"))
+	}
+}
+
+func TestBuildQuery_StaticParams(t *testing.T) {
+	sql, args, err := assetloader.BuildQuery(
+		"INSERT INTO t (owner, name, data) VALUES (:owner_id, :filename, :bytes)",
+		[]byte("data"),
+		"file.bin",
+		map[string]string{"owner_id": "99"},
+	)
+	if err != nil {
+		t.Fatalf("BuildQuery failed: %v", err)
+	}
+	if sql != "INSERT INTO t (owner, name, data) VALUES ($1, $2, $3)" {
+		t.Errorf("unexpected SQL: %s", sql)
+	}
+	if len(args) != 3 {
+		t.Fatalf("expected 3 args, got %d: %v", len(args), args)
+	}
+	if args[0].(string) != "99" {
+		t.Errorf("args[0]: got %q, want %q", args[0], "99")
+	}
+}
+
+func TestBuildQuery_RepeatedPlaceholder(t *testing.T) {
+	sql, args, err := assetloader.BuildQuery(
+		"SELECT length(:bytes), encode(:bytes, 'base64')",
+		[]byte("abc"),
+		"f.bin",
+		nil,
+	)
+	if err != nil {
+		t.Fatalf("BuildQuery failed: %v", err)
+	}
+	// :bytes appears twice but maps to same $1
+	if sql != "SELECT length($1), encode($1, 'base64')" {
+		t.Errorf("unexpected SQL: %s", sql)
+	}
+	if len(args) != 1 {
+		t.Fatalf("expected 1 arg, got %d", len(args))
+	}
+}
+
+func TestBuildQuery_PostgresCastNotMatched(t *testing.T) {
+	// ::text should NOT be treated as a placeholder
+	sql, args, err := assetloader.BuildQuery(
+		"SELECT :bytes::text, :filename",
+		[]byte("data"),
+		"f.txt",
+		nil,
+	)
+	if err != nil {
+		t.Fatalf("BuildQuery failed: %v", err)
+	}
+	if sql != "SELECT $1::text, $2" {
+		t.Errorf("unexpected SQL: %s", sql)
+	}
+	if len(args) != 2 {
+		t.Fatalf("expected 2 args, got %d", len(args))
+	}
+}
+
+func TestBuildQuery_UnknownPlaceholder(t *testing.T) {
+	_, _, err := assetloader.BuildQuery(
+		"SELECT :unknown_param",
+		[]byte("data"),
+		"f.txt",
+		nil,
+	)
+	if err == nil {
+		t.Fatal("expected error for unknown placeholder, got nil")
+	}
+}
+
+func TestBuildQuery_BinaryFileByteExact(t *testing.T) {
+	// Binary data with null bytes, high bytes - must pass through unchanged
+	binary := []byte{0x00, 0xFF, 0x80, 0x01, 0xFE}
+	_, args, err := assetloader.BuildQuery(
+		"INSERT INTO blobs (data) VALUES (:bytes)",
+		binary,
+		"blob.bin",
+		nil,
+	)
+	if err != nil {
+		t.Fatalf("BuildQuery failed: %v", err)
+	}
+	if len(args) != 1 {
+		t.Fatalf("expected 1 arg")
+	}
+	got := args[0].([]byte)
+	if len(got) != len(binary) {
+		t.Fatalf("byte count: got %d, want %d", len(got), len(binary))
+	}
+	for i, b := range binary {
+		if got[i] != b {
+			t.Errorf("byte[%d]: got 0x%02x, want 0x%02x", i, got[i], b)
+		}
+	}
+}
+
+// writeFile is a test helper that writes content to a file.
+func writeFile(t *testing.T, dir, name, content string) {
+	t.Helper()
+	if err := os.WriteFile(filepath.Join(dir, name), []byte(content), 0o644); err != nil {
+		t.Fatalf("writeFile %s: %v", name, err)
+	}
+}

pkg/diff/diff.go

@@ -2,10 +2,22 @@ package diff
 
 import (
 	"reflect"
+	"sort"
 
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 )
 
+// sortedKeys returns a map's keys sorted alphabetically, so callers get a
+// deterministic iteration order instead of Go's randomized map order.
+func sortedKeys[T any](m map[string]T) []string {
+	keys := make([]string, 0, len(m))
+	for k := range m {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	return keys
+}
+
 // CompareDatabases compares two database models and returns the differences
 func CompareDatabases(source, target *models.Database) *DiffResult {
 	result := &DiffResult{
@@ -34,7 +46,8 @@ func compareSchemas(source, target []*models.Schema) *SchemaDiff {
 	}
 
 	// Find missing and modified schemas
-	for name, srcSchema := range sourceMap {
+	for _, name := range sortedKeys(sourceMap) {
+		srcSchema := sourceMap[name]
 		if tgtSchema, exists := targetMap[name]; !exists {
 			diff.Missing = append(diff.Missing, srcSchema)
 		} else {
@@ -45,7 +58,8 @@ func compareSchemas(source, target []*models.Schema) *SchemaDiff {
 	}
 
 	// Find extra schemas
-	for name, tgtSchema := range targetMap {
+	for _, name := range sortedKeys(targetMap) {
+		tgtSchema := targetMap[name]
 		if _, exists := sourceMap[name]; !exists {
 			diff.Extra = append(diff.Extra, tgtSchema)
 		}
@@ -106,7 +120,8 @@ func compareTables(source, target []*models.Table) *TableDiff {
 	}
 
 	// Find missing and modified tables
-	for name, srcTable := range sourceMap {
+	for _, name := range sortedKeys(sourceMap) {
+		srcTable := sourceMap[name]
 		if tgtTable, exists := targetMap[name]; !exists {
 			diff.Missing = append(diff.Missing, srcTable)
 		} else {
@@ -117,7 +132,8 @@ func compareTables(source, target []*models.Table) *TableDiff {
 	}
 
 	// Find extra tables
-	for name, tgtTable := range targetMap {
+	for _, name := range sortedKeys(targetMap) {
+		tgtTable := targetMap[name]
 		if _, exists := sourceMap[name]; !exists {
 			diff.Extra = append(diff.Extra, tgtTable)
 		}
@@ -176,7 +192,8 @@ func compareColumns(source, target map[string]*models.Column) *ColumnDiff {
 	}
 
 	// Find missing and modified columns
-	for name, srcCol := range source {
+	for _, name := range sortedKeys(source) {
+		srcCol := source[name]
 		if tgtCol, exists := target[name]; !exists {
 			diff.Missing = append(diff.Missing, srcCol)
 		} else {
@@ -192,7 +209,8 @@ func compareColumns(source, target map[string]*models.Column) *ColumnDiff {
 	}
 
 	// Find extra columns
-	for name, tgtCol := range target {
+	for _, name := range sortedKeys(target) {
+		tgtCol := target[name]
 		if _, exists := source[name]; !exists {
 			diff.Extra = append(diff.Extra, tgtCol)
 		}
@@ -240,7 +258,8 @@ func compareIndexes(source, target map[string]*models.Index) *IndexDiff {
 	}
 
 	// Find missing and modified indexes
-	for name, srcIdx := range source {
+	for _, name := range sortedKeys(source) {
+		srcIdx := source[name]
 		if tgtIdx, exists := target[name]; !exists {
 			diff.Missing = append(diff.Missing, srcIdx)
 		} else {
@@ -256,7 +275,8 @@ func compareIndexes(source, target map[string]*models.Index) *IndexDiff {
 	}
 
 	// Find extra indexes
-	for name, tgtIdx := range target {
+	for _, name := range sortedKeys(target) {
+		tgtIdx := target[name]
 		if _, exists := source[name]; !exists {
 			diff.Extra = append(diff.Extra, tgtIdx)
 		}
@@ -292,7 +312,8 @@ func compareConstraints(source, target map[string]*models.Constraint) *Constrain
 	}
 
 	// Find missing and modified constraints
-	for name, srcCon := range source {
+	for _, name := range sortedKeys(source) {
+		srcCon := source[name]
 		if tgtCon, exists := target[name]; !exists {
 			diff.Missing = append(diff.Missing, srcCon)
 		} else {
@@ -308,7 +329,8 @@ func compareConstraints(source, target map[string]*models.Constraint) *Constrain
 	}
 
 	// Find extra constraints
-	for name, tgtCon := range target {
+	for _, name := range sortedKeys(target) {
+		tgtCon := target[name]
 		if _, exists := source[name]; !exists {
 			diff.Extra = append(diff.Extra, tgtCon)
 		}
@@ -350,7 +372,8 @@ func compareRelationships(source, target map[string]*models.Relationship) *Relat
 	}
 
 	// Find missing and modified relationships
-	for name, srcRel := range source {
+	for _, name := range sortedKeys(source) {
+		srcRel := source[name]
 		if tgtRel, exists := target[name]; !exists {
 			diff.Missing = append(diff.Missing, srcRel)
 		} else {
@@ -366,7 +389,8 @@ func compareRelationships(source, target map[string]*models.Relationship) *Relat
 	}
 
 	// Find extra relationships
-	for name, tgtRel := range target {
+	for _, name := range sortedKeys(target) {
+		tgtRel := target[name]
 		if _, exists := source[name]; !exists {
 			diff.Extra = append(diff.Extra, tgtRel)
 		}
@@ -415,7 +439,8 @@ func compareViews(source, target []*models.View) *ViewDiff {
 	}
 
 	// Find missing and modified views
-	for name, srcView := range sourceMap {
+	for _, name := range sortedKeys(sourceMap) {
+		srcView := sourceMap[name]
 		if tgtView, exists := targetMap[name]; !exists {
 			diff.Missing = append(diff.Missing, srcView)
 		} else {
@@ -431,7 +456,8 @@ func compareViews(source, target []*models.View) *ViewDiff {
 	}
 
 	// Find extra views
-	for name, tgtView := range targetMap {
+	for _, name := range sortedKeys(targetMap) {
+		tgtView := targetMap[name]
 		if _, exists := sourceMap[name]; !exists {
 			diff.Extra = append(diff.Extra, tgtView)
 		}
@@ -468,7 +494,8 @@ func compareSequences(source, target []*models.Sequence) *SequenceDiff {
 	}
 
 	// Find missing and modified sequences
-	for name, srcSeq := range sourceMap {
+	for _, name := range sortedKeys(sourceMap) {
+		srcSeq := sourceMap[name]
 		if tgtSeq, exists := targetMap[name]; !exists {
 			diff.Missing = append(diff.Missing, srcSeq)
 		} else {
@@ -484,7 +511,8 @@ func compareSequences(source, target []*models.Sequence) *SequenceDiff {
 	}
 
 	// Find extra sequences
-	for name, tgtSeq := range targetMap {
+	for _, name := range sortedKeys(targetMap) {
+		tgtSeq := targetMap[name]
 		if _, exists := sourceMap[name]; !exists {
 			diff.Extra = append(diff.Extra, tgtSeq)
 		}

pkg/diff/diff_test.go

@@ -1,6 +1,7 @@
 package diff
 
 import (
+	"reflect"
 	"testing"
 
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
@@ -140,6 +141,46 @@ func TestCompareColumns(t *testing.T) {
 	}
 }
 
+// TestCompareColumns_Deterministic verifies that Missing/Extra entries are
+// always reported in the same (alphabetical) order across repeated calls,
+// instead of following Go's randomized map iteration order over the
+// source/target column maps.
+func TestCompareColumns_Deterministic(t *testing.T) {
+	source := map[string]*models.Column{
+		"zeta":  {Name: "zeta", Type: "text"},
+		"alpha": {Name: "alpha", Type: "text"},
+		"mu":    {Name: "mu", Type: "text"},
+	}
+	target := map[string]*models.Column{
+		"omega":   {Name: "omega", Type: "text"},
+		"delta":   {Name: "delta", Type: "text"},
+		"charlie": {Name: "charlie", Type: "text"},
+	}
+
+	wantMissing := []string{"alpha", "mu", "zeta"}
+	wantExtra := []string{"charlie", "delta", "omega"}
+
+	for i := 0; i < 25; i++ {
+		got := compareColumns(source, target)
+
+		gotMissing := make([]string, len(got.Missing))
+		for j, c := range got.Missing {
+			gotMissing[j] = c.Name
+		}
+		gotExtra := make([]string, len(got.Extra))
+		for j, c := range got.Extra {
+			gotExtra[j] = c.Name
+		}
+
+		if !reflect.DeepEqual(gotMissing, wantMissing) {
+			t.Fatalf("compareColumns() Missing = %v, want %v (run %d)", gotMissing, wantMissing, i)
+		}
+		if !reflect.DeepEqual(gotExtra, wantExtra) {
+			t.Fatalf("compareColumns() Extra = %v, want %v (run %d)", gotExtra, wantExtra, i)
+		}
+	}
+}
+
 func TestCompareColumnDetails(t *testing.T) {
 	tests := []struct {
 		name   string

pkg/inspector/inspector.go

@@ -2,6 +2,7 @@ package inspector
 
 import (
 	"fmt"
+	"sort"
 	"time"
 
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
@@ -54,8 +55,15 @@ func NewInspector(db *models.Database, config *Config) *Inspector {
 func (i *Inspector) Inspect() (*InspectorReport, error) {
 	results := []ValidationResult{}
 
-	// Run all enabled validators
+	// Run all enabled validators in deterministic (alphabetical) rule-name order
-	for ruleName, rule := range i.config.Rules {
+	ruleNames := make([]string, 0, len(i.config.Rules))
+	for ruleName := range i.config.Rules {
+		ruleNames = append(ruleNames, ruleName)
+	}
+	sort.Strings(ruleNames)
+
+	for _, ruleName := range ruleNames {
+		rule := i.config.Rules[ruleName]
 		if !rule.IsEnabled() {
 			continue
 		}

pkg/inspector/inspector_test.go

@@ -51,6 +51,45 @@ func TestInspect(t *testing.T) {
 	}
 }
 
+// TestInspect_Deterministic verifies that repeated Inspect() calls against
+// the same database and config produce violations in the same order, instead
+// of following Go's randomized map iteration order over config.Rules and the
+// per-table Columns/Constraints/Indexes maps.
+func TestInspect_Deterministic(t *testing.T) {
+	db := createTestDatabase()
+	config := GetDefaultConfig()
+
+	inspector := NewInspector(db, config)
+
+	first, err := inspector.Inspect()
+	if err != nil {
+		t.Fatalf("Inspect() returned error: %v", err)
+	}
+
+	wantOrder := make([]string, len(first.Violations))
+	for i, v := range first.Violations {
+		wantOrder[i] = v.RuleName + "|" + v.Location
+	}
+
+	for i := 0; i < 25; i++ {
+		report, err := inspector.Inspect()
+		if err != nil {
+			t.Fatalf("Inspect() returned error on run %d: %v", i, err)
+		}
+
+		if len(report.Violations) != len(wantOrder) {
+			t.Fatalf("run %d: got %d violations, want %d", i, len(report.Violations), len(wantOrder))
+		}
+
+		for j, v := range report.Violations {
+			got := v.RuleName + "|" + v.Location
+			if got != wantOrder[j] {
+				t.Fatalf("run %d: violation[%d] = %q, want %q", i, j, got, wantOrder[j])
+			}
+		}
+	}
+}
+
 func TestInspectWithDisabledRules(t *testing.T) {
 	db := createTestDatabase()
 	config := GetDefaultConfig()

pkg/inspector/report.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"sort"
 	"strings"
 	"time"
 )
@@ -199,12 +200,18 @@ func (f *MarkdownFormatter) formatContext(context map[string]interface{}) string
 		"column": true,
 	}
 
-	for key, value := range context {
+	keys := make([]string, 0, len(context))
+	for key := range context {
+		keys = append(keys, key)
+	}
+	sort.Strings(keys)
+
+	for _, key := range keys {
 		if skipKeys[key] {
 			continue
 		}
 
-		parts = append(parts, fmt.Sprintf("%s=%v", key, value))
+		parts = append(parts, fmt.Sprintf("%s=%v", key, context[key]))
 	}
 
 	return strings.Join(parts, ", ")

pkg/inspector/validators.go

@@ -2,12 +2,54 @@ package inspector
 
 import (
 	"regexp"
+	"sort"
 	"strings"
 
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/pgsql"
 )
 
+// sortedKeys returns a map's keys sorted alphabetically, so validators report
+// violations in a deterministic order instead of Go's randomized map order.
+func sortedKeys[T any](m map[string]T) []string {
+	keys := make([]string, 0, len(m))
+	for k := range m {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+	return keys
+}
+
+// sortColumns returns columns sorted by Sequence then Name for deterministic output.
+func sortColumns(columns map[string]*models.Column) []*models.Column {
+	result := make([]*models.Column, 0, len(columns))
+	for _, col := range columns {
+		result = append(result, col)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortConstraints returns constraints sorted by Sequence then Name for deterministic output.
+func sortConstraints(constraints map[string]*models.Constraint) []*models.Constraint {
+	result := make([]*models.Constraint, 0, len(constraints))
+	for _, c := range constraints {
+		result = append(result, c)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
 // validatePrimaryKeyNaming checks that primary key column names match a pattern
 func validatePrimaryKeyNaming(db *models.Database, rule Rule, ruleName string) []ValidationResult {
 	results := []ValidationResult{}
@@ -18,7 +60,7 @@ func validatePrimaryKeyNaming(db *models.Database, rule Rule, ruleName string) [
 
 	for _, schema := range db.Schemas {
 		for _, table := range schema.Tables {
-			for _, col := range table.Columns {
+			for _, col := range sortColumns(table.Columns) {
 				if col.IsPrimaryKey {
 					location := formatLocation(schema.Name, table.Name, col.Name)
 					passed := pattern.MatchString(col.Name)
@@ -49,7 +91,7 @@ func validatePrimaryKeyDatatype(db *models.Database, rule Rule, ruleName string)
 
 	for _, schema := range db.Schemas {
 		for _, table := range schema.Tables {
-			for _, col := range table.Columns {
+			for _, col := range sortColumns(table.Columns) {
 				if col.IsPrimaryKey {
 					location := formatLocation(schema.Name, table.Name, col.Name)
 
@@ -84,7 +126,7 @@ func validatePrimaryKeyAutoIncrement(db *models.Database, rule Rule, ruleName st
 
 	for _, schema := range db.Schemas {
 		for _, table := range schema.Tables {
-			for _, col := range table.Columns {
+			for _, col := range sortColumns(table.Columns) {
 				if col.IsPrimaryKey {
 					location := formatLocation(schema.Name, table.Name, col.Name)
 
@@ -125,7 +167,7 @@ func validateForeignKeyColumnNaming(db *models.Database, rule Rule, ruleName str
 	for _, schema := range db.Schemas {
 		for _, table := range schema.Tables {
 			// Check foreign key constraints
-			for _, constraint := range table.Constraints {
+			for _, constraint := range sortConstraints(table.Constraints) {
 				if constraint.Type == models.ForeignKeyConstraint {
 					for _, colName := range constraint.Columns {
 						location := formatLocation(schema.Name, table.Name, colName)
@@ -163,7 +205,7 @@ func validateForeignKeyConstraintNaming(db *models.Database, rule Rule, ruleName
 
 	for _, schema := range db.Schemas {
 		for _, table := range schema.Tables {
-			for _, constraint := range table.Constraints {
+			for _, constraint := range sortConstraints(table.Constraints) {
 				if constraint.Type == models.ForeignKeyConstraint {
 					location := formatLocation(schema.Name, table.Name, "")
 					passed := pattern.MatchString(constraint.Name)
@@ -209,7 +251,7 @@ func validateForeignKeyIndex(db *models.Database, rule Rule, ruleName string) []
 			}
 
 			// Check if each FK column has an index
-			for fkCol := range fkColumns {
+			for _, fkCol := range sortedKeys(fkColumns) {
 				hasIndex := false
 
 				// Check table indexes
@@ -282,7 +324,7 @@ func validateColumnNamingCase(db *models.Database, rule Rule, ruleName string) [
 
 	for _, schema := range db.Schemas {
 		for _, table := range schema.Tables {
-			for _, col := range table.Columns {
+			for _, col := range sortColumns(table.Columns) {
 				location := formatLocation(schema.Name, table.Name, col.Name)
 				passed := pattern.MatchString(col.Name)
 
@@ -339,7 +381,7 @@ func validateColumnNameLength(db *models.Database, rule Rule, ruleName string) [
 
 	for _, schema := range db.Schemas {
 		for _, table := range schema.Tables {
-			for _, col := range table.Columns {
+			for _, col := range sortColumns(table.Columns) {
 				location := formatLocation(schema.Name, table.Name, col.Name)
 				passed := len(col.Name) <= rule.MaxLength
 
@@ -396,7 +438,7 @@ func validateReservedKeywords(db *models.Database, rule Rule, ruleName string) [
 
 			// Check column names
 			if rule.CheckColumns {
-				for _, col := range table.Columns {
+				for _, col := range sortColumns(table.Columns) {
 					location := formatLocation(schema.Name, table.Name, col.Name)
 					passed := !keywords[strings.ToUpper(col.Name)]
 
@@ -479,7 +521,7 @@ func validateOrphanedForeignKey(db *models.Database, rule Rule, ruleName string)
 	// Check all foreign key constraints
 	for _, schema := range db.Schemas {
 		for _, table := range schema.Tables {
-			for _, constraint := range table.Constraints {
+			for _, constraint := range sortConstraints(table.Constraints) {
 				if constraint.Type == models.ForeignKeyConstraint {
 					// Build referenced table key
 					refSchema := constraint.ReferencedSchema
@@ -522,7 +564,7 @@ func validateCircularDependency(db *models.Database, rule Rule, ruleName string)
 		for _, table := range schema.Tables {
 			tableKey := schema.Name + "." + table.Name
 
-			for _, constraint := range table.Constraints {
+			for _, constraint := range sortConstraints(table.Constraints) {
 				if constraint.Type == models.ForeignKeyConstraint {
 					refSchema := constraint.ReferencedSchema
 					if refSchema == "" {
@@ -537,7 +579,7 @@ func validateCircularDependency(db *models.Database, rule Rule, ruleName string)
 	}
 
 	// Check for cycles using DFS
-	for tableKey := range dependencies {
+	for _, tableKey := range sortedKeys(dependencies) {
 		visited := make(map[string]bool)
 		recStack := make(map[string]bool)
 

pkg/merge/merge.go

@@ -5,6 +5,7 @@ package merge
 
 import (
 	"fmt"
+	"sort"
 	"strconv"
 	"strings"
 
@@ -156,8 +157,17 @@ func (r *MergeResult) mergeColumns(table *models.Table, srcTable *models.Table)
 		existingColumns[colName] = table.Columns[colName]
 	}
 
-	// Merge columns
+	// Merge columns in deterministic (alphabetical) order so that, when a
-	for colName, srcCol := range srcTable.Columns {
+	// TypeConflicts entry is recorded, its position in the report doesn't
+	// depend on Go's randomized map iteration order.
+	srcColNames := make([]string, 0, len(srcTable.Columns))
+	for colName := range srcTable.Columns {
+		srcColNames = append(srcColNames, colName)
+	}
+	sort.Strings(srcColNames)
+
+	for _, colName := range srcColNames {
+		srcCol := srcTable.Columns[colName]
 		if tgtCol, exists := existingColumns[colName]; !exists {
 			// Column doesn't exist, add it
 			newCol := cloneColumn(srcCol)

pkg/models/flatview.go

@@ -1,6 +1,9 @@
 package models
 
-import "fmt"
+import (
+	"fmt"
+	"sort"
+)
 
 // Flat/Denormalized Views
 //
@@ -56,6 +59,10 @@ func (d *Database) ToFlatColumns() []*FlatColumn {
 		}
 	}
 
+	sort.Slice(flatColumns, func(i, j int) bool {
+		return flatColumns[i].FullyQualifiedName < flatColumns[j].FullyQualifiedName
+	})
+
 	return flatColumns
 }
 
@@ -148,6 +155,10 @@ func (d *Database) ToFlatConstraints() []*FlatConstraint {
 		}
 	}
 
+	sort.Slice(flatConstraints, func(i, j int) bool {
+		return flatConstraints[i].FullyQualifiedName < flatConstraints[j].FullyQualifiedName
+	})
+
 	return flatConstraints
 }
 
@@ -198,5 +209,16 @@ func (d *Database) ToFlatRelationships() []*FlatRelationship {
 		}
 	}
 
+	sort.Slice(flatRelationships, func(i, j int) bool {
+		a, b := flatRelationships[i], flatRelationships[j]
+		if a.FromFQN != b.FromFQN {
+			return a.FromFQN < b.FromFQN
+		}
+		if a.RelationshipName != b.RelationshipName {
+			return a.RelationshipName < b.RelationshipName
+		}
+		return a.ToFQN < b.ToFQN
+	})
+
 	return flatRelationships
 }

pkg/models/models.go

@@ -5,6 +5,7 @@
 package models
 
 import (
+	"sort"
 	"strings"
 	"time"
 
@@ -141,15 +142,28 @@ func (d *Table) SQLName() string {
 
 // GetPrimaryKey returns the primary key column for the table, or nil if none exists.
 func (m Table) GetPrimaryKey() *Column {
+	var pk *Column
 	for _, column := range m.Columns {
-		if column.IsPrimaryKey {
+		if !column.IsPrimaryKey {
-			return column
+			continue
+		}
+		if pk == nil || columnLess(column, pk) {
+			pk = column
 		}
 	}
-	return nil
+	return pk
 }
 
-// GetForeignKeys returns all foreign key constraints for the table.
+// columnLess reports whether a should sort before b, by Sequence then Name.
+func columnLess(a, b *Column) bool {
+	if a.Sequence > 0 && b.Sequence > 0 {
+		return a.Sequence < b.Sequence
+	}
+	return a.Name < b.Name
+}
+
+// GetForeignKeys returns all foreign key constraints for the table, sorted
+// deterministically by Sequence then Name.
 func (m Table) GetForeignKeys() []*Constraint {
 	keys := make([]*Constraint, 0)
 
@@ -158,6 +172,12 @@ func (m Table) GetForeignKeys() []*Constraint {
 			keys = append(keys, c)
 		}
 	}
+	sort.Slice(keys, func(i, j int) bool {
+		if keys[i].Sequence > 0 && keys[j].Sequence > 0 {
+			return keys[i].Sequence < keys[j].Sequence
+		}
+		return keys[i].Name < keys[j].Name
+	})
 	return keys
 }
 
@@ -350,16 +370,17 @@ const (
 // Script represents a database migration or initialization script.
 // Scripts can have dependencies and rollback capabilities.
 type Script struct {
-	Name        string   `json:"name" yaml:"name" xml:"name"`
+	Name        string         `json:"name" yaml:"name" xml:"name"`
-	Description string   `json:"description" yaml:"description" xml:"description"`
+	Description string         `json:"description" yaml:"description" xml:"description"`
-	SQL         string   `json:"sql" yaml:"sql" xml:"sql"`
+	SQL         string         `json:"sql" yaml:"sql" xml:"sql"`
-	Rollback    string   `json:"rollback,omitempty" yaml:"rollback,omitempty" xml:"rollback,omitempty"`
+	Rollback    string         `json:"rollback,omitempty" yaml:"rollback,omitempty" xml:"rollback,omitempty"`
-	RunAfter    []string `json:"run_after,omitempty" yaml:"run_after,omitempty" xml:"run_after,omitempty"`
+	RunAfter    []string       `json:"run_after,omitempty" yaml:"run_after,omitempty" xml:"run_after,omitempty"`
-	Schema      string   `json:"schema,omitempty" yaml:"schema,omitempty" xml:"schema,omitempty"`
+	Schema      string         `json:"schema,omitempty" yaml:"schema,omitempty" xml:"schema,omitempty"`
-	Version     string   `json:"version,omitempty" yaml:"version,omitempty" xml:"version,omitempty"`
+	Version     string         `json:"version,omitempty" yaml:"version,omitempty" xml:"version,omitempty"`
-	Priority    int      `json:"priority,omitempty" yaml:"priority,omitempty" xml:"priority,omitempty"`
+	Priority    int            `json:"priority,omitempty" yaml:"priority,omitempty" xml:"priority,omitempty"`
-	Sequence    uint     `json:"sequence,omitempty" yaml:"sequence,omitempty" xml:"sequence,omitempty"`
+	Sequence    uint           `json:"sequence,omitempty" yaml:"sequence,omitempty" xml:"sequence,omitempty"`
-	GUID        string   `json:"guid" yaml:"guid" xml:"guid"`
+	GUID        string         `json:"guid" yaml:"guid" xml:"guid"`
+	Metadata    map[string]any `json:"metadata,omitempty" yaml:"metadata,omitempty" xml:"-"`
 }
 
 // SQLName returns the script name in lowercase for SQL compatibility.
@@ -468,6 +489,7 @@ func InitScript(name string) *Script {
 	return &Script{
 		Name:     name,
 		RunAfter: make([]string, 0),
+		Metadata: make(map[string]any),
 		GUID:     uuid.New().String(),
 	}
 }

pkg/readers/bun/reader.go

@@ -746,7 +746,7 @@ func (r *Reader) goTypeToSQL(expr ast.Expr) string {
 				if t.Sel.Name == "Time" {
 					return "timestamp"
 				}
-			case "resolvespec_common", "sql_types":
+			case "sql_types":
 				return r.sqlTypeToSQL(t.Sel.Name)
 			}
 		}
@@ -787,7 +787,7 @@ func (r *Reader) isNullableGoType(expr ast.Expr) bool {
 	case *ast.SelectorExpr:
 		// Check for sql_types nullable types
 		if ident, ok := t.X.(*ast.Ident); ok {
-			if ident.Name == "resolvespec_common" || ident.Name == "sql_types" {
+			if ident.Name == "sql_types" {
 				return strings.HasPrefix(t.Sel.Name, "Sql")
 			}
 		}

pkg/readers/dctx/reader.go

@@ -4,6 +4,7 @@ import (
 	"encoding/xml"
 	"fmt"
 	"os"
+	"sort"
 	"strings"
 
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
@@ -373,7 +374,13 @@ func (r *Reader) convertKey(dctxKey *models.DCTXKey, table *models.Table, fieldG
 	if len(columns) == 0 {
 		if dctxKey.Primary {
 			// Look for common primary key column patterns
+			colNames := make([]string, 0, len(table.Columns))
 			for colName := range table.Columns {
+				colNames = append(colNames, colName)
+			}
+			sort.Strings(colNames)
+
+			for _, colName := range colNames {
 				colNameLower := strings.ToLower(colName)
 				if strings.HasPrefix(colNameLower, "rid_") || strings.HasSuffix(colNameLower, "id") {
 					columns = append(columns, colName)

pkg/readers/prisma/reader.go

@@ -820,17 +820,31 @@ func (r *Reader) createImplicitJoinTable(model1, model2 string, tableMap map[str
 	tableMap[joinTableName] = joinTable
 }
 
-// getPrimaryKeyColumn returns the primary key column of a table
+// getPrimaryKeyColumn returns the primary key column of a table. For tables
+// with a composite primary key, the column with the lowest Sequence (or,
+// failing that, the alphabetically first Name) is returned deterministically.
 func (r *Reader) getPrimaryKeyColumn(table *models.Table) *models.Column {
 	if table == nil {
 		return nil
 	}
 
+	var pk *models.Column
 	for _, col := range table.Columns {
-		if col.IsPrimaryKey {
+		if !col.IsPrimaryKey {
-			return col
+			continue
+		}
+		if pk == nil {
+			pk = col
+			continue
+		}
+		if col.Sequence > 0 && pk.Sequence > 0 {
+			if col.Sequence < pk.Sequence {
+				pk = col
+			}
+		} else if col.Name < pk.Name {
+			pk = col
 		}
 	}
 
-	return nil
+	return pk
 }

pkg/readers/sqldir/README.md

@@ -45,6 +45,21 @@ migrations/
 - `1_001_test.txt` - Wrong extension
 - `readme.md` - Not a SQL file
 
+## External File Embedding
+
+SQL files can include external files with `-- @embed` directives. File paths are resolved relative to the SQL file being read.
+
+```sql
+-- @embed: path=assets/message.txt var=:message mode=text
+-- @embed: path=assets/payload.bin var=:payload mode=base64
+INSERT INTO assets (message, payload)
+VALUES (:message, decode(:payload, 'base64')::bytea);
+```
+
+- `mode=text` reads UTF-8 text and replaces the placeholder with an escaped SQL string literal.
+- `mode=base64` reads any bytes and replaces the placeholder with a base64 SQL string literal.
+- The placeholder must be named, for example `:message`, and must appear in the SQL body.
+
 ## Usage
 
 ### Basic Usage

pkg/readers/sqldir/reader.go

@@ -7,6 +7,7 @@ import (
 	"regexp"
 	"strconv"
 
+	"git.warky.dev/wdevs/relspecgo/pkg/assetloader"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/readers"
 )
@@ -151,6 +152,10 @@ func (r *Reader) readScripts() ([]*models.Script, error) {
 		if err != nil {
 			return fmt.Errorf("failed to read file %s: %w", path, err)
 		}
+		sql, err := assetloader.ProcessEmbedDirectives(path, string(content))
+		if err != nil {
+			return err
+		}
 
 		// Get relative path from base directory
 		relPath, err := filepath.Rel(r.options.FilePath, path)
@@ -161,9 +166,10 @@ func (r *Reader) readScripts() ([]*models.Script, error) {
 		// Create Script model
 		script := models.InitScript(name)
 		script.Description = fmt.Sprintf("SQL script from %s", relPath)
-		script.SQL = string(content)
+		script.SQL = sql
 		script.Priority = priority
 		script.Sequence = uint(sequence)
+		script.Metadata[assetloader.ScriptSourcePathMetadataKey] = path
 
 		scripts = append(scripts, script)
 

pkg/readers/sqldir/reader_test.go

@@ -1,8 +1,10 @@
 package sqldir
 
 import (
+	"encoding/base64"
 	"os"
 	"path/filepath"
+	"strings"
 	"testing"
 
 	"git.warky.dev/wdevs/relspecgo/pkg/readers"
@@ -18,12 +20,12 @@ func TestReader_ReadDatabase(t *testing.T) {
 
 	// Create test SQL files with both underscore and hyphen separators
 	testFiles := map[string]string{
-		"1_001_create_users.sql":  "CREATE TABLE users (id SERIAL PRIMARY KEY, name TEXT);",
+		"1_001_create_users.sql":   "CREATE TABLE users (id SERIAL PRIMARY KEY, name TEXT);",
-		"1_002_create_posts.sql":  "CREATE TABLE posts (id SERIAL PRIMARY KEY, user_id INT);",
+		"1_002_create_posts.sql":   "CREATE TABLE posts (id SERIAL PRIMARY KEY, user_id INT);",
-		"2_001_add_indexes.sql":   "CREATE INDEX idx_posts_user_id ON posts(user_id);",
+		"2_001_add_indexes.sql":    "CREATE INDEX idx_posts_user_id ON posts(user_id);",
-		"1_003_seed_data.pgsql":   "INSERT INTO users (name) VALUES ('Alice'), ('Bob');",
+		"1_003_seed_data.pgsql":    "INSERT INTO users (name) VALUES ('Alice'), ('Bob');",
 		"10-10-create-newid.pgsql": "CREATE TABLE newid (id SERIAL PRIMARY KEY);",
-		"2-005-add-column.sql":    "ALTER TABLE users ADD COLUMN email TEXT;",
+		"2-005-add-column.sql":     "ALTER TABLE users ADD COLUMN email TEXT;",
 	}
 
 	for filename, content := range testFiles {
@@ -267,10 +269,10 @@ func TestReader_HyphenFormat(t *testing.T) {
 
 	// Create test files with hyphen separators
 	testFiles := map[string]string{
-		"1-001-create-table.sql":  "CREATE TABLE test (id INT);",
+		"1-001-create-table.sql":   "CREATE TABLE test (id INT);",
-		"1-002-insert-data.pgsql": "INSERT INTO test VALUES (1);",
+		"1-002-insert-data.pgsql":  "INSERT INTO test VALUES (1);",
 		"10-10-create-newid.pgsql": "CREATE TABLE newid (id SERIAL);",
-		"2-005-add-index.sql":     "CREATE INDEX idx_test ON test(id);",
+		"2-005-add-index.sql":      "CREATE INDEX idx_test ON test(id);",
 	}
 
 	for filename, content := range testFiles {
@@ -301,10 +303,10 @@ func TestReader_HyphenFormat(t *testing.T) {
 		priority int
 		sequence uint
 	}{
-		"create-table":  {1, 1},
+		"create-table": {1, 1},
-		"insert-data":   {1, 2},
+		"insert-data":  {1, 2},
-		"add-index":     {2, 5},
+		"add-index":    {2, 5},
-		"create-newid":  {10, 10},
+		"create-newid": {10, 10},
 	}
 
 	for _, script := range schema.Scripts {
@@ -435,3 +437,61 @@ func TestReader_SkipSymlinks(t *testing.T) {
 		t.Error("Symlink script should have been skipped but was found")
 	}
 }
+
+func TestReader_EmbedDirectives(t *testing.T) {
+	tempDir := t.TempDir()
+	assetDir := filepath.Join(tempDir, "assets")
+	if err := os.MkdirAll(assetDir, 0o755); err != nil {
+		t.Fatal(err)
+	}
+	if err := os.WriteFile(filepath.Join(assetDir, "message.txt"), []byte("Reader's text"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+	binary := []byte{0x00, 0x01, 0xfe, 0xff}
+	if err := os.WriteFile(filepath.Join(assetDir, "payload.bin"), binary, 0o644); err != nil {
+		t.Fatal(err)
+	}
+	sql := `
+-- @embed: path=assets/message.txt var=:message mode=text
+-- @embed: path=assets/payload.bin var=:payload mode=base64
+INSERT INTO assets (message, payload) VALUES (:message, decode(:payload, 'base64')::bytea);
+`
+	if err := os.WriteFile(filepath.Join(tempDir, "1_001_embed.sql"), []byte(sql), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	reader := NewReader(&readers.ReaderOptions{FilePath: tempDir})
+	db, err := reader.ReadDatabase()
+	if err != nil {
+		t.Fatalf("ReadDatabase failed: %v", err)
+	}
+	if len(db.Schemas[0].Scripts) != 1 {
+		t.Fatalf("expected 1 script, got %d", len(db.Schemas[0].Scripts))
+	}
+
+	got := db.Schemas[0].Scripts[0].SQL
+	if !strings.Contains(got, "'Reader''s text'") {
+		t.Fatalf("text asset was not embedded as an escaped SQL literal:\n%s", got)
+	}
+	wantBase64 := "decode('" + base64.StdEncoding.EncodeToString(binary) + "', 'base64')::bytea"
+	if !strings.Contains(got, wantBase64) {
+		t.Fatalf("binary asset was not embedded as a base64 SQL literal:\n%s", got)
+	}
+}
+
+func TestReader_EmbedDirectiveErrors(t *testing.T) {
+	tempDir := t.TempDir()
+	sql := "-- @embed: path=missing.txt var=:message mode=text\nSELECT :message;"
+	if err := os.WriteFile(filepath.Join(tempDir, "1_001_embed.sql"), []byte(sql), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	reader := NewReader(&readers.ReaderOptions{FilePath: tempDir})
+	_, err := reader.ReadDatabase()
+	if err == nil {
+		t.Fatal("expected embed error, got nil")
+	}
+	if !strings.Contains(err.Error(), "missing.txt") {
+		t.Fatalf("expected missing file in error, got %v", err)
+	}
+}

pkg/readers/typeorm/reader.go

@@ -806,17 +806,31 @@ func (r *Reader) createManyToManyJoinTable(entity1, entity2 string, tableMap map
 	tableMap[joinTableName] = joinTable
 }
 
-// getPrimaryKeyColumn returns the primary key column of a table
+// getPrimaryKeyColumn returns the primary key column of a table. For tables
+// with a composite primary key, the column with the lowest Sequence (or,
+// failing that, the alphabetically first Name) is returned deterministically.
 func (r *Reader) getPrimaryKeyColumn(table *models.Table) *models.Column {
 	if table == nil {
 		return nil
 	}
 
+	var pk *models.Column
 	for _, col := range table.Columns {
-		if col.IsPrimaryKey {
+		if !col.IsPrimaryKey {
-			return col
+			continue
+		}
+		if pk == nil {
+			pk = col
+			continue
+		}
+		if col.Sequence > 0 && pk.Sequence > 0 {
+			if col.Sequence < pk.Sequence {
+				pk = col
+			}
+		} else if col.Name < pk.Name {
+			pk = col
 		}
 	}
 
-	return nil
+	return pk
 }

pkg/reflectutil/helpers.go

@@ -1,14 +1,16 @@
 package reflectutil
 
 import (
+	"fmt"
 	"reflect"
+	"sort"
 	"strings"
 )
 
 // Deref dereferences pointers until it reaches a non-pointer value
 // Returns the dereferenced value and true if successful, or the original value and false if nil
 func Deref(v reflect.Value) (reflect.Value, bool) {
-	for v.Kind() == reflect.Ptr {
+	for v.Kind() == reflect.Pointer {
 		if v.IsNil() {
 			return v, false
 		}
@@ -134,7 +136,7 @@ func MapKeys(i interface{}) []interface{} {
 		return []interface{}{}
 	}
 
-	keys := v.MapKeys()
+	keys := sortedMapKeys(v)
 	result := make([]interface{}, len(keys))
 	for i, key := range keys {
 		result[i] = key.Interface()
@@ -155,14 +157,39 @@ func MapValues(i interface{}) []interface{} {
 		return []interface{}{}
 	}
 
-	result := make([]interface{}, 0, v.Len())
+	keys := sortedMapKeys(v)
-	iter := v.MapRange()
+	result := make([]interface{}, 0, len(keys))
-	for iter.Next() {
+	for _, key := range keys {
-		result = append(result, iter.Value().Interface())
+		result = append(result, v.MapIndex(key).Interface())
 	}
 	return result
 }
 
+func sortedMapKeys(v reflect.Value) []reflect.Value {
+	keys := v.MapKeys()
+	sort.SliceStable(keys, func(i, j int) bool {
+		return mapKeyLess(keys[i], keys[j])
+	})
+	return keys
+}
+
+func mapKeyLess(a, b reflect.Value) bool {
+	switch a.Kind() {
+	case reflect.String:
+		return a.String() < b.String()
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return a.Int() < b.Int()
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		return a.Uint() < b.Uint()
+	case reflect.Float32, reflect.Float64:
+		return a.Float() < b.Float()
+	case reflect.Bool:
+		return !a.Bool() && b.Bool()
+	default:
+		return fmt.Sprint(a.Interface()) < fmt.Sprint(b.Interface())
+	}
+}
+
 // MapGet safely gets a value from a map by key
 // Returns nil if key doesn't exist or not a map
 func MapGet(m interface{}, key interface{}) interface{} {

pkg/sqltypes/README.md

@@ -0,0 +1,136 @@
+# sqltypes
+
+Nullable SQL types for hand-written or generated Go models. Each type wraps a
+value with a `Valid` flag and implements `database/sql.Scanner`,
+`driver.Valuer`, `encoding/json`, `gopkg.in/yaml.v3`, and `encoding/xml`
+marshalling — so a single struct field can be scanned from a database row,
+round-tripped through JSON/YAML/XML, and written back to the database without
+any per-format glue code.
+
+This package is what the `bun` and `gorm` writers emit when generating models
+with `--types sqltypes` (see [`pkg/writers/bun`](../writers/bun/README.md) and
+[`pkg/writers/gorm`](../writers/gorm/README.md)). It can also be imported
+directly in hand-written models.
+
+## Import
+
+```go
+import sql_types "git.warky.dev/wdevs/relspecgo/pkg/sqltypes"
+```
+
+## Scalar types
+
+All scalar types are instantiations of the generic `SqlNull[T]`:
+
+| Type | Underlying | Typical SQL type |
+|---|---|---|
+| `SqlInt16` | `int16` | `smallint` |
+| `SqlInt32` | `int32` | `integer` |
+| `SqlInt64` | `int64` | `bigint` |
+| `SqlFloat32` | `float32` | `real`, `float4` |
+| `SqlFloat64` | `float64` | `double precision`, `numeric`, `decimal`, `money` |
+| `SqlBool` | `bool` | `boolean` |
+| `SqlString` | `string` | `text`, `varchar`, `char`, `citext`, `inet`, `cidr`, `macaddr` |
+| `SqlByteArray` | `[]byte` | `bytea` (base64-encoded in JSON/YAML/XML) |
+| `SqlUUID` | `uuid.UUID` (`github.com/google/uuid`) | `uuid` |
+
+You can also instantiate `SqlNull[T]` directly for any type not covered
+above, e.g. `SqlNull[MyEnum]`.
+
+### Date/time types
+
+Plain `time.Time` doesn't distinguish date-only, time-only, and timestamp
+semantics, and its zero value marshals to a confusing `0001-01-01T00:00:00Z`.
+These wrapper types fix both problems:
+
+| Type | Format | Notes |
+|---|---|---|
+| `SqlTimeStamp` | `2006-01-02T15:04:05` | Full timestamp |
+| `SqlDate` | `2006-01-02` | Date only |
+| `SqlTime` | `15:04:05` | Time only |
+
+Zero/pre-epoch values (`time.Time{}` or anything before `0002-01-01`) marshal
+to `null` and `Value()` returns `nil`, instead of leaking Go's zero-time
+sentinel into the database or API responses.
+
+### JSON types
+
+| Type | Underlying | Notes |
+|---|---|---|
+| `SqlJSONB` | `[]byte` | Raw JSON bytes; `MarshalYAML` decodes to native YAML mappings/sequences instead of an embedded JSON string |
+| `SqlJSON` | `= SqlJSONB` | Alias — PostgreSQL's `json` and `jsonb` share the same Go representation |
+
+`SqlJSONB` has `AsMap()` / `AsSlice()` helpers for pulling out
+`map[string]any` / `[]any` without a separate `json.Unmarshal` call.
+
+### Vector type (pgvector)
+
+`SqlVector` wraps `[]float32` for the `vector` column type ([pgvector](https://github.com/pgvector/pgvector)),
+scanning/writing the `[1,2,3]` literal format pgvector uses over the wire.
+
+## Array types
+
+PostgreSQL array columns (`text[]`, `integer[]`, …) map to `SqlXxxArray`
+types, each wrapping `Val []T` + `Valid bool` and handling PostgreSQL's
+`{a,b,c}` array literal format on `Scan`/`Value`:
+
+`SqlStringArray`, `SqlInt16Array`, `SqlInt32Array`, `SqlInt64Array`,
+`SqlFloat32Array`, `SqlFloat64Array`, `SqlBoolArray`, `SqlUUIDArray`.
+
+## Constructing values
+
+Every type has a `NewSqlXxx(v)` constructor that sets `Valid: true`:
+
+```go
+name := sql_types.NewSqlString("Ada Lovelace")
+age  := sql_types.NewSqlInt32(36)
+tags := sql_types.NewSqlStringArray([]string{"engineer", "mathematician"})
+```
+
+The zero value of any type (`sql_types.SqlString{}`) is null/invalid — use it
+directly for a `NULL` field instead of a separate constructor.
+
+Generic helpers:
+
+```go
+sql_types.Null(v, valid)      // SqlNull[T]{Val: v, Valid: valid}
+sql_types.NewSql[T](anyValue) // best-effort conversion from any Go value
+```
+
+## Reading values back
+
+Each scalar type has typed accessors that return the zero value instead of
+panicking when `Valid` is false:
+
+```go
+n.Int64()   // SqlInt16/32/64, SqlFloat32/64, SqlBool, SqlString → int64
+n.Float64() // → float64
+n.Bool()    // → bool
+n.Time()    // SqlNull[time.Time]-based types → time.Time
+n.UUID()    // SqlUUID → uuid.UUID
+n.String()  // fmt.Stringer — empty string when invalid
+```
+
+## Example
+
+```go
+type User struct {
+    ID        sql_types.SqlUUID        `json:"id"`
+    Name      sql_types.SqlString      `json:"name"`
+    Tags      sql_types.SqlStringArray `json:"tags"`
+    Metadata  sql_types.SqlJSONB       `json:"metadata"`
+    CreatedAt sql_types.SqlTimeStamp   `json:"created_at"`
+}
+
+u := User{
+    ID:        sql_types.NewSqlUUID(uuid.New()),
+    Name:      sql_types.NewSqlString("Ada Lovelace"),
+    Tags:      sql_types.NewSqlStringArray([]string{"engineer"}),
+    CreatedAt: sql_types.SqlTimeStampNow(),
+}
+// Metadata left as the zero value → serializes as null, scans as NULL.
+```
+
+Every type implements `sql.Scanner` and `driver.Valuer`, so these fields can
+be used directly as struct fields with `database/sql`, `bun`, or `gorm`
+without additional tags or hooks.

pkg/sqltypes/sql_array_types_test.go

@@ -0,0 +1,485 @@
+package sqltypes
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/google/uuid"
+)
+
+func TestParsePostgresArrayElements(t *testing.T) {
+	tests := []struct {
+		name    string
+		input   string
+		want    []string
+		wantErr bool
+	}{
+		{"simple", "{a,b,c}", []string{"a", "b", "c"}, false},
+		{"empty array", "{}", []string{}, false},
+		{"null", "NULL", nil, false},
+		{"lowercase null", "null", nil, false},
+		{"empty string", "", nil, false},
+		{"quoted with comma", `{a,"b,c",d}`, []string{"a", "b,c", "d"}, false},
+		{"escaped quote", `{"a""b"}`, []string{`a"b`}, false},
+		{"escaped backslash", `{"a\\b"}`, []string{`a\b`}, false},
+		{"not an array", "abc", nil, true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := parsePostgresArrayElements(tt.input)
+			if tt.wantErr {
+				if err == nil {
+					t.Fatalf("expected error, got nil")
+				}
+				return
+			}
+			if err != nil {
+				t.Fatalf("unexpected error: %v", err)
+			}
+			if len(got) != len(tt.want) {
+				t.Fatalf("expected %v, got %v", tt.want, got)
+			}
+			for i := range got {
+				if got[i] != tt.want[i] {
+					t.Errorf("index %d: expected %q, got %q", i, tt.want[i], got[i])
+				}
+			}
+		})
+	}
+}
+
+func TestFormatPostgresStringArray(t *testing.T) {
+	tests := []struct {
+		name  string
+		input []string
+		want  string
+	}{
+		{"nil", nil, "NULL"},
+		{"empty", []string{}, "{}"},
+		{"simple", []string{"a", "b"}, "{a,b}"},
+		{"needs quoting comma", []string{"a,b"}, `{"a,b"}`},
+		{"needs quoting empty elem", []string{""}, `{""}`},
+		{"needs quoting quote", []string{`a"b`}, `{"a""b"}`},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got := formatPostgresStringArray(tt.input)
+			if got != tt.want {
+				t.Errorf("expected %q, got %q", tt.want, got)
+			}
+		})
+	}
+}
+
+func TestSqlStringArray(t *testing.T) {
+	t.Run("scan and value round-trip", func(t *testing.T) {
+		var a SqlStringArray
+		if err := a.Scan(`{a,"b,c",d}`); err != nil {
+			t.Fatalf("Scan failed: %v", err)
+		}
+		want := []string{"a", "b,c", "d"}
+		if len(a.Val) != len(want) {
+			t.Fatalf("expected %v, got %v", want, a.Val)
+		}
+		for i := range want {
+			if a.Val[i] != want[i] {
+				t.Errorf("index %d: expected %q, got %q", i, want[i], a.Val[i])
+			}
+		}
+
+		val, err := a.Value()
+		if err != nil {
+			t.Fatalf("Value failed: %v", err)
+		}
+		var b SqlStringArray
+		if err := b.Scan(val); err != nil {
+			t.Fatalf("re-scan failed: %v", err)
+		}
+		for i := range want {
+			if b.Val[i] != want[i] {
+				t.Errorf("round-trip index %d: expected %q, got %q", i, want[i], b.Val[i])
+			}
+		}
+	})
+
+	t.Run("scan nil", func(t *testing.T) {
+		var a SqlStringArray
+		if err := a.Scan(nil); err != nil {
+			t.Fatalf("Scan failed: %v", err)
+		}
+		if a.Valid {
+			t.Error("expected invalid")
+		}
+	})
+
+	t.Run("value invalid", func(t *testing.T) {
+		a := SqlStringArray{Valid: false}
+		val, err := a.Value()
+		if err != nil {
+			t.Fatalf("Value failed: %v", err)
+		}
+		if val != nil {
+			t.Errorf("expected nil, got %v", val)
+		}
+	})
+
+	t.Run("scan wrong type", func(t *testing.T) {
+		var a SqlStringArray
+		if err := a.Scan(42); err == nil {
+			t.Error("expected error for unsupported scan type")
+		}
+	})
+
+	t.Run("json round-trip", func(t *testing.T) {
+		a := NewSqlStringArray([]string{"x", "y", "z"})
+		data, err := json.Marshal(a)
+		if err != nil {
+			t.Fatalf("Marshal failed: %v", err)
+		}
+		if string(data) != `["x","y","z"]` {
+			t.Errorf("unexpected JSON: %s", data)
+		}
+		var a2 SqlStringArray
+		if err := json.Unmarshal(data, &a2); err != nil {
+			t.Fatalf("Unmarshal failed: %v", err)
+		}
+		if !a2.Valid || len(a2.Val) != 3 {
+			t.Fatalf("expected 3 valid elements, got %v", a2)
+		}
+	})
+
+	t.Run("json null", func(t *testing.T) {
+		var a SqlStringArray
+		data, err := json.Marshal(a)
+		if err != nil {
+			t.Fatalf("Marshal failed: %v", err)
+		}
+		if string(data) != "null" {
+			t.Errorf("expected null, got %s", data)
+		}
+		var a2 SqlStringArray
+		if err := json.Unmarshal([]byte("null"), &a2); err != nil {
+			t.Fatalf("Unmarshal failed: %v", err)
+		}
+		if a2.Valid {
+			t.Error("expected invalid after unmarshaling null")
+		}
+	})
+
+	t.Run("json unmarshal invalid type errors", func(t *testing.T) {
+		var a SqlStringArray
+		if err := json.Unmarshal([]byte(`42`), &a); err == nil {
+			t.Error("expected error unmarshaling non-array JSON")
+		}
+	})
+}
+
+func TestSqlInt16Array(t *testing.T) {
+	t.Run("scan and value", func(t *testing.T) {
+		var a SqlInt16Array
+		if err := a.Scan("{1,2,-3}"); err != nil {
+			t.Fatalf("Scan failed: %v", err)
+		}
+		want := []int16{1, 2, -3}
+		for i := range want {
+			if a.Val[i] != want[i] {
+				t.Errorf("index %d: expected %d, got %d", i, want[i], a.Val[i])
+			}
+		}
+		val, err := a.Value()
+		if err != nil {
+			t.Fatalf("Value failed: %v", err)
+		}
+		if val != "{1,2,-3}" {
+			t.Errorf("expected {1,2,-3}, got %v", val)
+		}
+	})
+
+	t.Run("scan invalid element", func(t *testing.T) {
+		var a SqlInt16Array
+		if err := a.Scan("{1,abc}"); err == nil {
+			t.Error("expected error for non-numeric element")
+		}
+	})
+
+	t.Run("json round-trip", func(t *testing.T) {
+		a := NewSqlInt16Array([]int16{5, 10, 15})
+		data, err := json.Marshal(a)
+		if err != nil {
+			t.Fatalf("Marshal failed: %v", err)
+		}
+		var a2 SqlInt16Array
+		if err := json.Unmarshal(data, &a2); err != nil {
+			t.Fatalf("Unmarshal failed: %v", err)
+		}
+		for i, v := range a.Val {
+			if a2.Val[i] != v {
+				t.Errorf("index %d: expected %d, got %d", i, v, a2.Val[i])
+			}
+		}
+	})
+}
+
+func TestSqlInt32Array(t *testing.T) {
+	a := NewSqlInt32Array([]int32{100000, -200000})
+	val, err := a.Value()
+	if err != nil {
+		t.Fatalf("Value failed: %v", err)
+	}
+	var b SqlInt32Array
+	if err := b.Scan(val); err != nil {
+		t.Fatalf("Scan failed: %v", err)
+	}
+	for i, v := range a.Val {
+		if b.Val[i] != v {
+			t.Errorf("index %d: expected %d, got %d", i, v, b.Val[i])
+		}
+	}
+
+	data, err := json.Marshal(a)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var c SqlInt32Array
+	if err := json.Unmarshal(data, &c); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	for i, v := range a.Val {
+		if c.Val[i] != v {
+			t.Errorf("index %d: expected %d, got %d", i, v, c.Val[i])
+		}
+	}
+}
+
+func TestSqlInt64Array(t *testing.T) {
+	a := NewSqlInt64Array([]int64{9223372036854775807, -9223372036854775808})
+	val, err := a.Value()
+	if err != nil {
+		t.Fatalf("Value failed: %v", err)
+	}
+	var b SqlInt64Array
+	if err := b.Scan(val); err != nil {
+		t.Fatalf("Scan failed: %v", err)
+	}
+	for i, v := range a.Val {
+		if b.Val[i] != v {
+			t.Errorf("index %d: expected %d, got %d", i, v, b.Val[i])
+		}
+	}
+
+	t.Run("null json", func(t *testing.T) {
+		var n SqlInt64Array
+		data, _ := json.Marshal(n)
+		if string(data) != "null" {
+			t.Errorf("expected null, got %s", data)
+		}
+	})
+}
+
+func TestSqlFloat32Array(t *testing.T) {
+	a := NewSqlFloat32Array([]float32{1.5, -2.25, 0})
+	val, err := a.Value()
+	if err != nil {
+		t.Fatalf("Value failed: %v", err)
+	}
+	var b SqlFloat32Array
+	if err := b.Scan(val); err != nil {
+		t.Fatalf("Scan failed: %v", err)
+	}
+	for i, v := range a.Val {
+		if b.Val[i] != v {
+			t.Errorf("index %d: expected %v, got %v", i, v, b.Val[i])
+		}
+	}
+
+	data, err := json.Marshal(a)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var c SqlFloat32Array
+	if err := json.Unmarshal(data, &c); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	for i, v := range a.Val {
+		if c.Val[i] != v {
+			t.Errorf("index %d: expected %v, got %v", i, v, c.Val[i])
+		}
+	}
+}
+
+func TestSqlFloat64Array(t *testing.T) {
+	a := NewSqlFloat64Array([]float64{3.14159, -2.71828})
+	val, err := a.Value()
+	if err != nil {
+		t.Fatalf("Value failed: %v", err)
+	}
+	var b SqlFloat64Array
+	if err := b.Scan(val); err != nil {
+		t.Fatalf("Scan failed: %v", err)
+	}
+	for i, v := range a.Val {
+		if b.Val[i] != v {
+			t.Errorf("index %d: expected %v, got %v", i, v, b.Val[i])
+		}
+	}
+}
+
+func TestSqlBoolArray(t *testing.T) {
+	t.Run("scan various truthy forms", func(t *testing.T) {
+		var a SqlBoolArray
+		if err := a.Scan("{t,f,true,false,1,0,yes}"); err != nil {
+			t.Fatalf("Scan failed: %v", err)
+		}
+		want := []bool{true, false, true, false, true, false, true}
+		for i := range want {
+			if a.Val[i] != want[i] {
+				t.Errorf("index %d: expected %v, got %v", i, want[i], a.Val[i])
+			}
+		}
+	})
+
+	t.Run("value formatting", func(t *testing.T) {
+		a := NewSqlBoolArray([]bool{true, false})
+		val, err := a.Value()
+		if err != nil {
+			t.Fatalf("Value failed: %v", err)
+		}
+		if val != "{t,f}" {
+			t.Errorf("expected {t,f}, got %v", val)
+		}
+	})
+
+	t.Run("json round-trip", func(t *testing.T) {
+		a := NewSqlBoolArray([]bool{true, false, true})
+		data, err := json.Marshal(a)
+		if err != nil {
+			t.Fatalf("Marshal failed: %v", err)
+		}
+		var a2 SqlBoolArray
+		if err := json.Unmarshal(data, &a2); err != nil {
+			t.Fatalf("Unmarshal failed: %v", err)
+		}
+		for i, v := range a.Val {
+			if a2.Val[i] != v {
+				t.Errorf("index %d: expected %v, got %v", i, v, a2.Val[i])
+			}
+		}
+	})
+}
+
+func TestSqlUUIDArray(t *testing.T) {
+	u1, u2 := uuid.New(), uuid.New()
+
+	t.Run("scan and value round-trip", func(t *testing.T) {
+		a := NewSqlUUIDArray([]uuid.UUID{u1, u2})
+		val, err := a.Value()
+		if err != nil {
+			t.Fatalf("Value failed: %v", err)
+		}
+		var b SqlUUIDArray
+		if err := b.Scan(val); err != nil {
+			t.Fatalf("Scan failed: %v", err)
+		}
+		if b.Val[0] != u1 || b.Val[1] != u2 {
+			t.Errorf("expected [%v %v], got %v", u1, u2, b.Val)
+		}
+	})
+
+	t.Run("scan invalid uuid element", func(t *testing.T) {
+		var a SqlUUIDArray
+		if err := a.Scan("{not-a-uuid}"); err == nil {
+			t.Error("expected error for invalid uuid element")
+		}
+	})
+
+	t.Run("json round-trip", func(t *testing.T) {
+		a := NewSqlUUIDArray([]uuid.UUID{u1, u2})
+		data, err := json.Marshal(a)
+		if err != nil {
+			t.Fatalf("Marshal failed: %v", err)
+		}
+		var a2 SqlUUIDArray
+		if err := json.Unmarshal(data, &a2); err != nil {
+			t.Fatalf("Unmarshal failed: %v", err)
+		}
+		if a2.Val[0] != u1 || a2.Val[1] != u2 {
+			t.Errorf("expected [%v %v], got %v", u1, u2, a2.Val)
+		}
+	})
+}
+
+func TestSqlVector(t *testing.T) {
+	t.Run("scan and value round-trip", func(t *testing.T) {
+		var v SqlVector
+		if err := v.Scan("[1,2.5,-3]"); err != nil {
+			t.Fatalf("Scan failed: %v", err)
+		}
+		want := []float32{1, 2.5, -3}
+		for i := range want {
+			if v.Val[i] != want[i] {
+				t.Errorf("index %d: expected %v, got %v", i, want[i], v.Val[i])
+			}
+		}
+		val, err := v.Value()
+		if err != nil {
+			t.Fatalf("Value failed: %v", err)
+		}
+		if val != "[1,2.5,-3]" {
+			t.Errorf("expected [1,2.5,-3], got %v", val)
+		}
+	})
+
+	t.Run("scan empty vector", func(t *testing.T) {
+		var v SqlVector
+		if err := v.Scan("[]"); err != nil {
+			t.Fatalf("Scan failed: %v", err)
+		}
+		if !v.Valid || len(v.Val) != 0 {
+			t.Errorf("expected valid empty vector, got %v", v)
+		}
+	})
+
+	t.Run("scan invalid literal", func(t *testing.T) {
+		var v SqlVector
+		if err := v.Scan("not-a-vector"); err == nil {
+			t.Error("expected error for invalid vector literal")
+		}
+	})
+
+	t.Run("json round-trip", func(t *testing.T) {
+		v := NewSqlVector([]float32{0.1, 0.2, 0.3})
+		data, err := json.Marshal(v)
+		if err != nil {
+			t.Fatalf("Marshal failed: %v", err)
+		}
+		var v2 SqlVector
+		if err := json.Unmarshal(data, &v2); err != nil {
+			t.Fatalf("Unmarshal failed: %v", err)
+		}
+		for i, f := range v.Val {
+			if v2.Val[i] != f {
+				t.Errorf("index %d: expected %v, got %v", i, f, v2.Val[i])
+			}
+		}
+	})
+
+	t.Run("json null", func(t *testing.T) {
+		var v SqlVector
+		data, err := json.Marshal(v)
+		if err != nil {
+			t.Fatalf("Marshal failed: %v", err)
+		}
+		if string(data) != "null" {
+			t.Errorf("expected null, got %s", data)
+		}
+		var v2 SqlVector
+		if err := json.Unmarshal([]byte("null"), &v2); err != nil {
+			t.Fatalf("Unmarshal failed: %v", err)
+		}
+		if v2.Valid {
+			t.Error("expected invalid after unmarshaling null")
+		}
+	})
+}

pkg/sqltypes/sql_types.go

@@ -0,0 +1,981 @@
+// Package sqltypes provides nullable SQL types with automatic casting and conversion methods.
+package sqltypes
+
+import (
+	"database/sql"
+	"database/sql/driver"
+	"encoding/base64"
+	"encoding/json"
+	"encoding/xml"
+	"fmt"
+	"reflect"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+	"gopkg.in/yaml.v3"
+)
+
+// tryParseDT attempts to parse a string into a time.Time using various formats.
+func tryParseDT(str string) (time.Time, error) {
+	var lasterror error
+	tryFormats := []string{
+		time.RFC3339,
+		"2006-01-02T15:04:05.000-0700",
+		"2006-01-02T15:04:05.000",
+		"06-01-02T15:04:05.000",
+		"2006-01-02T15:04:05",
+		"2006-01-02 15:04:05",
+		"02/01/2006",
+		"02-01-2006",
+		"2006-01-02",
+		"15:04:05.000",
+		"15:04:05",
+		"15:04",
+	}
+	for _, f := range tryFormats {
+		tx, err := time.Parse(f, str)
+		if err == nil {
+			return tx, nil
+		}
+		lasterror = err
+	}
+	return time.Time{}, lasterror // Return zero time on failure
+}
+
+// ToJSONDT formats a time.Time to RFC3339 string.
+func ToJSONDT(dt time.Time) string {
+	return dt.Format(time.RFC3339)
+}
+
+// SqlNull is a generic nullable type that behaves like sql.NullXXX with auto-casting.
+type SqlNull[T any] struct {
+	Val   T
+	Valid bool
+}
+
+// Scan implements sql.Scanner.
+func (n *SqlNull[T]) Scan(value any) error {
+	if value == nil {
+		n.Valid = false
+		n.Val = *new(T)
+		return nil
+	}
+
+	// Check if T is []byte, and decode base64 if applicable
+	// Do this BEFORE trying sql.Null to ensure base64 is handled
+	var zero T
+	if _, ok := any(zero).([]byte); ok {
+		// For []byte types, try to decode from base64
+		var strVal string
+		switch v := value.(type) {
+		case string:
+			strVal = v
+		case []byte:
+			strVal = string(v)
+		default:
+			strVal = fmt.Sprintf("%v", value)
+		}
+		// Try base64 decode
+		if decoded, err := base64.StdEncoding.DecodeString(strVal); err == nil {
+			n.Val = any(decoded).(T)
+			n.Valid = true
+			return nil
+		}
+		// Fallback to raw bytes
+		n.Val = any([]byte(strVal)).(T)
+		n.Valid = true
+		return nil
+	}
+
+	// Try standard sql.Null[T] for other types.
+	var sqlNull sql.Null[T]
+	if err := sqlNull.Scan(value); err == nil {
+		n.Val = sqlNull.V
+		n.Valid = sqlNull.Valid
+		return nil
+	}
+
+	// Fallback: parse from string/bytes.
+	switch v := value.(type) {
+	case string:
+		return n.FromString(v)
+	case []byte:
+		return n.FromString(string(v))
+	case float32, float64:
+		return n.FromString(fmt.Sprintf("%f", value))
+	case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64:
+		return n.FromString(fmt.Sprintf("%d", value))
+	default:
+		return n.FromString(fmt.Sprintf("%v", value))
+	}
+}
+func (n *SqlNull[T]) FromString(s string) error {
+	s = strings.TrimSpace(s)
+	n.Valid = false
+	n.Val = *new(T)
+
+	if s == "" || strings.EqualFold(s, "null") {
+		return nil
+	}
+
+	var zero T
+	switch any(zero).(type) {
+	case int, int8, int16, int32, int64:
+		if i, err := strconv.ParseInt(s, 10, 64); err == nil {
+			reflect.ValueOf(&n.Val).Elem().SetInt(i)
+			n.Valid = true
+		} else if f, err := strconv.ParseFloat(s, 64); err == nil {
+			reflect.ValueOf(&n.Val).Elem().SetInt(int64(f))
+			n.Valid = true
+		}
+	case uint, uint8, uint16, uint32, uint64:
+		if u, err := strconv.ParseUint(s, 10, 64); err == nil {
+			reflect.ValueOf(&n.Val).Elem().SetUint(u)
+			n.Valid = true
+		} else if f, err := strconv.ParseFloat(s, 64); err == nil && f >= 0 {
+			reflect.ValueOf(&n.Val).Elem().SetUint(uint64(f))
+			n.Valid = true
+		}
+	case float32, float64:
+		if f, err := strconv.ParseFloat(s, 64); err == nil {
+			reflect.ValueOf(&n.Val).Elem().SetFloat(f)
+			n.Valid = true
+		}
+	case bool:
+		if b, err := strconv.ParseBool(s); err == nil {
+			n.Val = any(b).(T)
+			n.Valid = true
+		}
+	case time.Time:
+		if t, err := tryParseDT(s); err == nil && !t.IsZero() {
+			n.Val = any(t).(T)
+			n.Valid = true
+		}
+	case uuid.UUID:
+		if u, err := uuid.Parse(s); err == nil {
+			n.Val = any(u).(T)
+			n.Valid = true
+		}
+	case []byte:
+		n.Val = any([]byte(s)).(T)
+		n.Valid = true
+	case string:
+		n.Val = any(s).(T)
+		n.Valid = true
+	}
+	return nil
+}
+
+// Value implements driver.Valuer.
+func (n SqlNull[T]) Value() (driver.Value, error) {
+	if !n.Valid {
+		return nil, nil
+	}
+
+	// Check if the type implements fmt.Stringer (e.g., uuid.UUID, custom types)
+	// Convert to string for driver compatibility
+	if stringer, ok := any(n.Val).(fmt.Stringer); ok {
+		return stringer.String(), nil
+	}
+
+	return any(n.Val), nil
+}
+
+// MarshalJSON implements json.Marshaler.
+func (n SqlNull[T]) MarshalJSON() ([]byte, error) {
+	if !n.Valid {
+		return []byte("null"), nil
+	}
+
+	// Check if T is []byte, and encode to base64
+	if _, ok := any(n.Val).([]byte); ok {
+		// Encode []byte as base64
+		encoded := base64.StdEncoding.EncodeToString(any(n.Val).([]byte))
+		return json.Marshal(encoded)
+	}
+
+	return json.Marshal(n.Val)
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (n *SqlNull[T]) UnmarshalJSON(b []byte) error {
+	if len(b) == 0 || string(b) == "null" || strings.TrimSpace(string(b)) == "" {
+		n.Valid = false
+		n.Val = *new(T)
+		return nil
+	}
+
+	// Check if T is []byte, and decode from base64
+	var val T
+	if _, ok := any(val).([]byte); ok {
+		// Unmarshal as string first (JSON representation)
+		var s string
+		if err := json.Unmarshal(b, &s); err == nil {
+			// Decode from base64
+			if decoded, err := base64.StdEncoding.DecodeString(s); err == nil {
+				n.Val = any(decoded).(T)
+				n.Valid = true
+				return nil
+			}
+			// Fallback to raw string as bytes
+			n.Val = any([]byte(s)).(T)
+			n.Valid = true
+			return nil
+		}
+	}
+
+	if err := json.Unmarshal(b, &val); err == nil {
+		n.Val = val
+		n.Valid = true
+		return nil
+	}
+
+	// Fallback: unmarshal as string and parse.
+	var s string
+	if err := json.Unmarshal(b, &s); err == nil {
+		return n.FromString(s)
+	}
+
+	return fmt.Errorf("cannot unmarshal %s into SqlNull[%T]", b, n.Val)
+}
+
+// MarshalYAML implements yaml.Marshaler.
+func (n SqlNull[T]) MarshalYAML() (any, error) {
+	if !n.Valid {
+		return nil, nil
+	}
+
+	// Check if T is []byte, and encode to base64 (mirrors MarshalJSON).
+	if b, ok := any(n.Val).([]byte); ok {
+		return base64.StdEncoding.EncodeToString(b), nil
+	}
+
+	return n.Val, nil
+}
+
+// UnmarshalYAML implements yaml.Unmarshaler.
+func (n *SqlNull[T]) UnmarshalYAML(value *yaml.Node) error {
+	if value == nil || value.Tag == "!!null" {
+		n.Valid = false
+		n.Val = *new(T)
+		return nil
+	}
+
+	// Check if T is []byte, and decode from base64.
+	var zero T
+	if _, ok := any(zero).([]byte); ok {
+		var s string
+		if err := value.Decode(&s); err == nil {
+			if decoded, err := base64.StdEncoding.DecodeString(s); err == nil {
+				n.Val = any(decoded).(T)
+				n.Valid = true
+				return nil
+			}
+			n.Val = any([]byte(s)).(T)
+			n.Valid = true
+			return nil
+		}
+	}
+
+	var val T
+	if err := value.Decode(&val); err == nil {
+		n.Val = val
+		n.Valid = true
+		return nil
+	}
+
+	// Fallback: decode as string and parse.
+	var s string
+	if err := value.Decode(&s); err == nil {
+		return n.FromString(s)
+	}
+
+	return fmt.Errorf("cannot unmarshal %q into SqlNull[%T]", value.Value, n.Val)
+}
+
+// MarshalXML implements xml.Marshaler.
+func (n SqlNull[T]) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
+	if !n.Valid {
+		return e.EncodeElement("", start)
+	}
+
+	// Check if T is []byte, and encode to base64 (mirrors MarshalJSON).
+	if b, ok := any(n.Val).([]byte); ok {
+		return e.EncodeElement(base64.StdEncoding.EncodeToString(b), start)
+	}
+
+	return e.EncodeElement(n.Val, start)
+}
+
+// UnmarshalXML implements xml.Unmarshaler.
+//
+// XML has no native null representation, so an empty element unmarshals to
+// an invalid (null) value rather than a zero-value-but-valid one.
+func (n *SqlNull[T]) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	var s string
+	if err := d.DecodeElement(&s, &start); err != nil {
+		return err
+	}
+	if s == "" {
+		n.Valid = false
+		n.Val = *new(T)
+		return nil
+	}
+
+	var zero T
+	if _, ok := any(zero).([]byte); ok {
+		if decoded, err := base64.StdEncoding.DecodeString(s); err == nil {
+			n.Val = any(decoded).(T)
+			n.Valid = true
+			return nil
+		}
+		n.Val = any([]byte(s)).(T)
+		n.Valid = true
+		return nil
+	}
+
+	return n.FromString(s)
+}
+
+// String implements fmt.Stringer.
+func (n SqlNull[T]) String() string {
+	if !n.Valid {
+		return ""
+	}
+	// Check if the type implements fmt.Stringer for better string representation
+	if stringer, ok := any(n.Val).(fmt.Stringer); ok {
+		return stringer.String()
+	}
+	return fmt.Sprintf("%v", n.Val)
+}
+
+// Int64 converts to int64 or 0 if invalid.
+func (n SqlNull[T]) Int64() int64 {
+	if !n.Valid {
+		return 0
+	}
+	v := reflect.ValueOf(any(n.Val))
+	switch v.Kind() {
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return v.Int()
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		return int64(v.Uint())
+	case reflect.Float32, reflect.Float64:
+		return int64(v.Float())
+	case reflect.String:
+		i, _ := strconv.ParseInt(v.String(), 10, 64)
+		return i
+	case reflect.Bool:
+		if v.Bool() {
+			return 1
+		}
+		return 0
+	}
+	return 0
+}
+
+// Float64 converts to float64 or 0.0 if invalid.
+func (n SqlNull[T]) Float64() float64 {
+	if !n.Valid {
+		return 0.0
+	}
+	v := reflect.ValueOf(any(n.Val))
+	switch v.Kind() {
+	case reflect.Float32, reflect.Float64:
+		return v.Float()
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		return float64(v.Int())
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+		return float64(v.Uint())
+	case reflect.String:
+		f, _ := strconv.ParseFloat(v.String(), 64)
+		return f
+	}
+	return 0.0
+}
+
+// Bool converts to bool or false if invalid.
+func (n SqlNull[T]) Bool() bool {
+	if !n.Valid {
+		return false
+	}
+	v := reflect.ValueOf(any(n.Val))
+	if v.Kind() == reflect.Bool {
+		return v.Bool()
+	}
+	s := strings.ToLower(strings.TrimSpace(fmt.Sprint(n.Val)))
+	return s == "true" || s == "t" || s == "1" || s == "yes" || s == "on"
+}
+
+// Time converts to time.Time or zero if invalid.
+func (n SqlNull[T]) Time() time.Time {
+	if !n.Valid {
+		return time.Time{}
+	}
+	if t, ok := any(n.Val).(time.Time); ok {
+		return t
+	}
+	return time.Time{}
+}
+
+// UUID converts to uuid.UUID or Nil if invalid.
+func (n SqlNull[T]) UUID() uuid.UUID {
+	if !n.Valid {
+		return uuid.Nil
+	}
+	if u, ok := any(n.Val).(uuid.UUID); ok {
+		return u
+	}
+	return uuid.Nil
+}
+
+// Type aliases for common types.
+type (
+	SqlInt16     = SqlNull[int16]
+	SqlInt32     = SqlNull[int32]
+	SqlInt64     = SqlNull[int64]
+	SqlFloat32   = SqlNull[float32]
+	SqlFloat64   = SqlNull[float64]
+	SqlBool      = SqlNull[bool]
+	SqlString    = SqlNull[string]
+	SqlByteArray = SqlNull[[]byte]
+	SqlUUID      = SqlNull[uuid.UUID]
+)
+
+// SqlTimeStamp - Timestamp with custom formatting (YYYY-MM-DDTHH:MM:SS).
+type SqlTimeStamp struct{ SqlNull[time.Time] }
+
+func (t SqlTimeStamp) MarshalJSON() ([]byte, error) {
+	if !t.Valid || t.Val.IsZero() || t.Val.Before(time.Date(0002, 1, 1, 0, 0, 0, 0, time.UTC)) {
+		return []byte("null"), nil
+	}
+	return fmt.Appendf(nil, `"%s"`, t.Val.Format("2006-01-02T15:04:05")), nil
+}
+
+func (t *SqlTimeStamp) UnmarshalJSON(b []byte) error {
+	if err := t.SqlNull.UnmarshalJSON(b); err != nil {
+		return err
+	}
+	if t.Valid && (t.Val.IsZero() || t.Val.Format("2006-01-02T15:04:05") == "0001-01-01T00:00:00") {
+		t.Valid = false
+	}
+	return nil
+}
+
+func (t SqlTimeStamp) Value() (driver.Value, error) {
+	if !t.Valid || t.Val.IsZero() || t.Val.Before(time.Date(0002, 1, 1, 0, 0, 0, 0, time.UTC)) {
+		return nil, nil
+	}
+	return t.Val.Format("2006-01-02T15:04:05"), nil
+}
+
+func (t SqlTimeStamp) MarshalYAML() (any, error) {
+	if !t.Valid || t.Val.IsZero() || t.Val.Before(time.Date(0002, 1, 1, 0, 0, 0, 0, time.UTC)) {
+		return nil, nil
+	}
+	return t.Val.Format("2006-01-02T15:04:05"), nil
+}
+
+func (t *SqlTimeStamp) UnmarshalYAML(value *yaml.Node) error {
+	if err := t.SqlNull.UnmarshalYAML(value); err != nil {
+		return err
+	}
+	if t.Valid && (t.Val.IsZero() || t.Val.Format("2006-01-02T15:04:05") == "0001-01-01T00:00:00") {
+		t.Valid = false
+	}
+	return nil
+}
+
+func (t SqlTimeStamp) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
+	if !t.Valid || t.Val.IsZero() || t.Val.Before(time.Date(0002, 1, 1, 0, 0, 0, 0, time.UTC)) {
+		return e.EncodeElement("", start)
+	}
+	return e.EncodeElement(t.Val.Format("2006-01-02T15:04:05"), start)
+}
+
+func (t *SqlTimeStamp) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	var s string
+	if err := d.DecodeElement(&s, &start); err != nil {
+		return err
+	}
+	if s == "" {
+		t.Valid = false
+		t.Val = time.Time{}
+		return nil
+	}
+	tm, err := tryParseDT(s)
+	if err != nil {
+		return err
+	}
+	t.Val = tm
+	t.Valid = !tm.IsZero() && tm.Format("2006-01-02T15:04:05") != "0001-01-01T00:00:00"
+	return nil
+}
+
+func SqlTimeStampNow() SqlTimeStamp {
+	return SqlTimeStamp{SqlNull: SqlNull[time.Time]{Val: time.Now(), Valid: true}}
+}
+
+// SqlDate - Date only (YYYY-MM-DD).
+type SqlDate struct{ SqlNull[time.Time] }
+
+func (d SqlDate) MarshalJSON() ([]byte, error) {
+	if !d.Valid || d.Val.IsZero() {
+		return []byte("null"), nil
+	}
+	s := d.Val.Format("2006-01-02")
+	if strings.HasPrefix(s, "0001-01-01") {
+		return []byte("null"), nil
+	}
+	return fmt.Appendf(nil, `"%s"`, s), nil
+}
+
+func (d *SqlDate) UnmarshalJSON(b []byte) error {
+	if err := d.SqlNull.UnmarshalJSON(b); err != nil {
+		return err
+	}
+	if d.Valid && d.Val.Format("2006-01-02") <= "0001-01-01" {
+		d.Valid = false
+	}
+	return nil
+}
+
+func (d SqlDate) Value() (driver.Value, error) {
+	if !d.Valid || d.Val.IsZero() {
+		return nil, nil
+	}
+	s := d.Val.Format("2006-01-02")
+	if s <= "0001-01-01" {
+		return nil, nil
+	}
+	return s, nil
+}
+
+func (d SqlDate) String() string {
+	if !d.Valid {
+		return ""
+	}
+	s := d.Val.Format("2006-01-02")
+	if strings.HasPrefix(s, "0001-01-01") || strings.HasPrefix(s, "1800-12-31") {
+		return ""
+	}
+	return s
+}
+
+func (d SqlDate) MarshalYAML() (any, error) {
+	if !d.Valid || d.Val.IsZero() {
+		return nil, nil
+	}
+	s := d.Val.Format("2006-01-02")
+	if strings.HasPrefix(s, "0001-01-01") {
+		return nil, nil
+	}
+	return s, nil
+}
+
+func (d *SqlDate) UnmarshalYAML(value *yaml.Node) error {
+	if err := d.SqlNull.UnmarshalYAML(value); err != nil {
+		return err
+	}
+	if d.Valid && d.Val.Format("2006-01-02") <= "0001-01-01" {
+		d.Valid = false
+	}
+	return nil
+}
+
+func (d SqlDate) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
+	if !d.Valid || d.Val.IsZero() {
+		return e.EncodeElement("", start)
+	}
+	s := d.Val.Format("2006-01-02")
+	if strings.HasPrefix(s, "0001-01-01") {
+		return e.EncodeElement("", start)
+	}
+	return e.EncodeElement(s, start)
+}
+
+func (d *SqlDate) UnmarshalXML(dec *xml.Decoder, start xml.StartElement) error {
+	var s string
+	if err := dec.DecodeElement(&s, &start); err != nil {
+		return err
+	}
+	if s == "" {
+		d.Valid = false
+		d.Val = time.Time{}
+		return nil
+	}
+	tm, err := tryParseDT(s)
+	if err != nil {
+		return err
+	}
+	d.Val = tm
+	d.Valid = !tm.IsZero() && tm.Format("2006-01-02") > "0001-01-01"
+	return nil
+}
+
+func SqlDateNow() SqlDate {
+	return SqlDate{SqlNull: SqlNull[time.Time]{Val: time.Now(), Valid: true}}
+}
+
+// SqlTime - Time only (HH:MM:SS).
+type SqlTime struct{ SqlNull[time.Time] }
+
+func (t SqlTime) MarshalJSON() ([]byte, error) {
+	if !t.Valid || t.Val.IsZero() {
+		return []byte("null"), nil
+	}
+	s := t.Val.Format("15:04:05")
+	if s == "00:00:00" {
+		return []byte("null"), nil
+	}
+	return fmt.Appendf(nil, `"%s"`, s), nil
+}
+
+func (t *SqlTime) UnmarshalJSON(b []byte) error {
+	if err := t.SqlNull.UnmarshalJSON(b); err != nil {
+		return err
+	}
+	if t.Valid && t.Val.Format("15:04:05") == "00:00:00" {
+		t.Valid = false
+	}
+	return nil
+}
+
+func (t SqlTime) Value() (driver.Value, error) {
+	if !t.Valid || t.Val.IsZero() {
+		return nil, nil
+	}
+	return t.Val.Format("15:04:05"), nil
+}
+
+func (t SqlTime) String() string {
+	if !t.Valid {
+		return ""
+	}
+	return t.Val.Format("15:04:05")
+}
+
+func (t SqlTime) MarshalYAML() (any, error) {
+	if !t.Valid || t.Val.IsZero() {
+		return nil, nil
+	}
+	s := t.Val.Format("15:04:05")
+	if s == "00:00:00" {
+		return nil, nil
+	}
+	return s, nil
+}
+
+func (t *SqlTime) UnmarshalYAML(value *yaml.Node) error {
+	if err := t.SqlNull.UnmarshalYAML(value); err != nil {
+		return err
+	}
+	if t.Valid && t.Val.Format("15:04:05") == "00:00:00" {
+		t.Valid = false
+	}
+	return nil
+}
+
+func (t SqlTime) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
+	if !t.Valid || t.Val.IsZero() {
+		return e.EncodeElement("", start)
+	}
+	s := t.Val.Format("15:04:05")
+	if s == "00:00:00" {
+		return e.EncodeElement("", start)
+	}
+	return e.EncodeElement(s, start)
+}
+
+func (t *SqlTime) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	var s string
+	if err := d.DecodeElement(&s, &start); err != nil {
+		return err
+	}
+	if s == "" {
+		t.Valid = false
+		t.Val = time.Time{}
+		return nil
+	}
+	tm, err := tryParseDT(s)
+	if err != nil {
+		return err
+	}
+	t.Val = tm
+	t.Valid = !tm.IsZero() && tm.Format("15:04:05") != "00:00:00"
+	return nil
+}
+
+func SqlTimeNow() SqlTime {
+	return SqlTime{SqlNull: SqlNull[time.Time]{Val: time.Now(), Valid: true}}
+}
+
+// SqlJSONB - Nullable JSONB as []byte.
+type SqlJSONB []byte
+
+// SqlJSON - Nullable JSON as []byte. PostgreSQL's json and jsonb types share
+// the same textual representation and Go marshalling behavior, differing only
+// in server-side storage, so SqlJSON is an alias of SqlJSONB.
+type SqlJSON = SqlJSONB
+
+// Scan implements sql.Scanner.
+func (n *SqlJSONB) Scan(value any) error {
+	if value == nil {
+		*n = nil
+		return nil
+	}
+	switch v := value.(type) {
+	case string:
+		*n = []byte(v)
+	case []byte:
+		*n = v
+	default:
+		dat, err := json.Marshal(value)
+		if err != nil {
+			return fmt.Errorf("failed to marshal value to JSON: %v", err)
+		}
+		*n = dat
+	}
+	return nil
+}
+
+// Value implements driver.Valuer.
+func (n SqlJSONB) Value() (driver.Value, error) {
+	if len(n) == 0 {
+		return nil, nil
+	}
+	var js any
+	if err := json.Unmarshal(n, &js); err != nil {
+		return nil, fmt.Errorf("invalid JSON: %v", err)
+	}
+	return string(n), nil
+}
+
+// MarshalJSON implements json.Marshaler.
+func (n SqlJSONB) MarshalJSON() ([]byte, error) {
+	if len(n) == 0 {
+		return []byte("null"), nil
+	}
+	var obj any
+	if err := json.Unmarshal(n, &obj); err != nil {
+		return []byte("null"), nil
+	}
+	return n, nil
+}
+
+// UnmarshalJSON implements json.Unmarshaler.
+func (n *SqlJSONB) UnmarshalJSON(b []byte) error {
+	s := strings.TrimSpace(string(b))
+	if s == "null" || s == "" || (!strings.HasPrefix(s, "{") && !strings.HasPrefix(s, "[")) {
+		*n = nil
+		return nil
+	}
+	*n = b
+	return nil
+}
+
+// MarshalYAML implements yaml.Marshaler. The underlying JSON is decoded into
+// a generic value first so it renders as native YAML mappings/sequences
+// rather than an embedded JSON string.
+func (n SqlJSONB) MarshalYAML() (any, error) {
+	if len(n) == 0 {
+		return nil, nil
+	}
+	var v any
+	if err := json.Unmarshal(n, &v); err != nil {
+		return nil, nil
+	}
+	return v, nil
+}
+
+// UnmarshalYAML implements yaml.Unmarshaler.
+func (n *SqlJSONB) UnmarshalYAML(value *yaml.Node) error {
+	if value == nil || value.Tag == "!!null" {
+		*n = nil
+		return nil
+	}
+	var v any
+	if err := value.Decode(&v); err != nil {
+		return err
+	}
+	b, err := json.Marshal(v)
+	if err != nil {
+		return err
+	}
+	*n = b
+	return nil
+}
+
+// MarshalXML implements xml.Marshaler. JSON has no clean structural mapping
+// to XML, so the raw JSON text is emitted as the element's text content.
+func (n SqlJSONB) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
+	if len(n) == 0 {
+		return e.EncodeElement("", start)
+	}
+	var obj any
+	if err := json.Unmarshal(n, &obj); err != nil {
+		return e.EncodeElement("", start)
+	}
+	return e.EncodeElement(string(n), start)
+}
+
+// UnmarshalXML implements xml.Unmarshaler, reading back the raw JSON text
+// written by MarshalXML.
+func (n *SqlJSONB) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
+	var s string
+	if err := d.DecodeElement(&s, &start); err != nil {
+		return err
+	}
+	s = strings.TrimSpace(s)
+	if s == "" {
+		*n = nil
+		return nil
+	}
+	*n = []byte(s)
+	return nil
+}
+
+func (n SqlJSONB) AsMap() (map[string]any, error) {
+	if len(n) == 0 {
+		return nil, nil
+	}
+	js := make(map[string]any)
+	if err := json.Unmarshal(n, &js); err != nil {
+		return nil, fmt.Errorf("invalid JSON: %v", err)
+	}
+	return js, nil
+}
+
+func (n SqlJSONB) AsSlice() ([]any, error) {
+	if len(n) == 0 {
+		return nil, nil
+	}
+	js := make([]any, 0)
+	if err := json.Unmarshal(n, &js); err != nil {
+		return nil, fmt.Errorf("invalid JSON: %v", err)
+	}
+	return js, nil
+}
+
+// TryIfInt64 tries to parse any value to int64 with default.
+func TryIfInt64(v any, def int64) int64 {
+	switch val := v.(type) {
+	case string:
+		i, err := strconv.ParseInt(val, 10, 64)
+		if err != nil {
+			return def
+		}
+		return i
+	case int:
+		return int64(val)
+	case int8:
+		return int64(val)
+	case int16:
+		return int64(val)
+	case int32:
+		return int64(val)
+	case int64:
+		return val
+	case uint:
+		return int64(val)
+	case uint8:
+		return int64(val)
+	case uint16:
+		return int64(val)
+	case uint32:
+		return int64(val)
+	case uint64:
+		return int64(val)
+	case float32:
+		return int64(val)
+	case float64:
+		return int64(val)
+	case []byte:
+		i, err := strconv.ParseInt(string(val), 10, 64)
+		if err != nil {
+			return def
+		}
+		return i
+	default:
+		return def
+	}
+}
+
+// Constructor helpers - clean and fast value creation
+func Null[T any](v T, valid bool) SqlNull[T] {
+	return SqlNull[T]{Val: v, Valid: valid}
+}
+
+func NewSql[T any](value any) SqlNull[T] {
+	n := SqlNull[T]{}
+
+	if value == nil {
+		return n
+	}
+
+	// Fast path: exact match
+	if v, ok := value.(T); ok {
+		n.Val = v
+		n.Valid = true
+		return n
+	}
+
+	// Try from another SqlNull
+	if sn, ok := value.(SqlNull[T]); ok {
+		return sn
+	}
+
+	// Convert via string
+	_ = n.FromString(fmt.Sprintf("%v", value))
+	return n
+}
+
+func NewSqlInt16(v int16) SqlInt16 {
+	return SqlInt16{Val: v, Valid: true}
+}
+
+func NewSqlInt32(v int32) SqlInt32 {
+	return SqlInt32{Val: v, Valid: true}
+}
+
+func NewSqlInt64(v int64) SqlInt64 {
+	return SqlInt64{Val: v, Valid: true}
+}
+
+func NewSqlFloat32(v float32) SqlFloat32 {
+	return SqlFloat32{Val: v, Valid: true}
+}
+
+func NewSqlFloat64(v float64) SqlFloat64 {
+	return SqlFloat64{Val: v, Valid: true}
+}
+
+func NewSqlBool(v bool) SqlBool {
+	return SqlBool{Val: v, Valid: true}
+}
+
+func NewSqlString(v string) SqlString {
+	return SqlString{Val: v, Valid: true}
+}
+
+func NewSqlByteArray(v []byte) SqlByteArray {
+	return SqlByteArray{Val: v, Valid: true}
+}
+
+func NewSqlUUID(v uuid.UUID) SqlUUID {
+	return SqlUUID{Val: v, Valid: true}
+}
+
+func NewSqlTimeStamp(v time.Time) SqlTimeStamp {
+	return SqlTimeStamp{SqlNull: SqlNull[time.Time]{Val: v, Valid: true}}
+}
+
+func NewSqlDate(v time.Time) SqlDate {
+	return SqlDate{SqlNull: SqlNull[time.Time]{Val: v, Valid: true}}
+}
+
+func NewSqlTime(v time.Time) SqlTime {
+	return SqlTime{SqlNull: SqlNull[time.Time]{Val: v, Valid: true}}
+}

pkg/sqltypes/sql_types_fromstring_test.go

@@ -0,0 +1,134 @@
+package sqltypes
+
+import (
+	"encoding/json"
+	"testing"
+)
+
+// TestSqlNull_FromString_UnsignedInt guards against a regression where
+// FromString called reflect.Value.SetInt on unsigned-kind fields, which
+// panics since SetInt only accepts Int/Int8/.../Int64 kinds.
+func TestSqlNull_FromString_UnsignedInt(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected uint32
+	}{
+		{"simple", "123", 123},
+		{"zero", "0", 0},
+		{"large", "4000000000", 4000000000},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var n SqlNull[uint32]
+			if err := n.FromString(tt.input); err != nil {
+				t.Fatalf("FromString failed: %v", err)
+			}
+			if !n.Valid {
+				t.Fatalf("expected valid=true")
+			}
+			if n.Val != tt.expected {
+				t.Errorf("expected %d, got %d", tt.expected, n.Val)
+			}
+		})
+	}
+}
+
+// TestSqlNull_FromString_Int64Precision guards against a regression where
+// FromString unconditionally re-parsed the string as float64 after a
+// successful ParseInt, corrupting large int64 values due to float rounding
+// (e.g. math.MaxInt64 became negative).
+func TestSqlNull_FromString_Int64Precision(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    string
+		expected int64
+	}{
+		{"max int64", "9223372036854775807", 9223372036854775807},
+		{"min int64", "-9223372036854775808", -9223372036854775808},
+		{"large safe value", "1234567890123456", 1234567890123456},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var n SqlNull[int64]
+			if err := n.FromString(tt.input); err != nil {
+				t.Fatalf("FromString failed: %v", err)
+			}
+			if !n.Valid {
+				t.Fatalf("expected valid=true")
+			}
+			if n.Val != tt.expected {
+				t.Errorf("expected %d, got %d", tt.expected, n.Val)
+			}
+		})
+	}
+}
+
+// TestSqlNull_FromString_FloatFallback verifies that non-integral strings
+// still parse via the float fallback path for integer-kind fields.
+func TestSqlNull_FromString_FloatFallback(t *testing.T) {
+	var n SqlNull[int32]
+	if err := n.FromString("42.9"); err != nil {
+		t.Fatalf("FromString failed: %v", err)
+	}
+	if !n.Valid || n.Val != 42 {
+		t.Errorf("expected valid int32=42, got valid=%v val=%d", n.Valid, n.Val)
+	}
+
+	var u SqlNull[uint32]
+	if err := u.FromString("42.9"); err != nil {
+		t.Fatalf("FromString failed: %v", err)
+	}
+	if !u.Valid || u.Val != 42 {
+		t.Errorf("expected valid uint32=42, got valid=%v val=%d", u.Valid, u.Val)
+	}
+
+	var neg SqlNull[uint32]
+	if err := neg.FromString("-1.5"); err != nil {
+		t.Fatalf("FromString failed: %v", err)
+	}
+	if neg.Valid {
+		t.Errorf("expected invalid for negative value into unsigned type, got %v", neg.Val)
+	}
+}
+
+// TestSqlNull_UnsignedTypes_ScanAndJSON exercises Scan and JSON round-trip
+// for every unsigned alias to make sure none of them panic.
+func TestSqlNull_UnsignedTypes_ScanAndJSON(t *testing.T) {
+	t.Run("uint8 scan from string", func(t *testing.T) {
+		var n SqlNull[uint8]
+		if err := n.Scan("200"); err != nil {
+			t.Fatalf("Scan failed: %v", err)
+		}
+		if !n.Valid || n.Val != 200 {
+			t.Errorf("expected valid uint8=200, got valid=%v val=%d", n.Valid, n.Val)
+		}
+	})
+
+	t.Run("uint64 json round-trip", func(t *testing.T) {
+		n := Null(uint64(18446744073709551615), true)
+		data, err := json.Marshal(n)
+		if err != nil {
+			t.Fatalf("Marshal failed: %v", err)
+		}
+		var n2 SqlNull[uint64]
+		if err := json.Unmarshal(data, &n2); err != nil {
+			t.Fatalf("Unmarshal failed: %v", err)
+		}
+		if n2.Val != n.Val {
+			t.Errorf("expected %d, got %d", n.Val, n2.Val)
+		}
+	})
+
+	t.Run("uint scan from numeric string fallback", func(t *testing.T) {
+		var n SqlNull[uint]
+		if err := n.Scan([]byte("77")); err != nil {
+			t.Fatalf("Scan failed: %v", err)
+		}
+		if !n.Valid || n.Val != 77 {
+			t.Errorf("expected valid uint=77, got valid=%v val=%d", n.Valid, n.Val)
+		}
+	})
+}

pkg/sqltypes/sql_types_test.go

@@ -0,0 +1,958 @@
+package sqltypes
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+// TestNewSqlInt16 tests NewSqlInt16 type
+func TestNewSqlInt16(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    interface{}
+		expected SqlInt16
+	}{
+		{"int", 42, Null(int16(42), true)},
+		{"int32", int32(100), NewSqlInt16(100)},
+		{"int64", int64(200), NewSqlInt16(200)},
+		{"string", "123", NewSqlInt16(123)},
+		{"nil", nil, Null(int16(0), false)},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var n SqlInt16
+			if err := n.Scan(tt.input); err != nil {
+				t.Fatalf("Scan failed: %v", err)
+			}
+			if n != tt.expected {
+				t.Errorf("expected %v, got %v", tt.expected, n)
+			}
+		})
+	}
+}
+
+func TestNewSqlInt16_Value(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    SqlInt16
+		expected driver.Value
+	}{
+		{"zero", Null(int16(0), false), nil},
+		{"positive", NewSqlInt16(42), int16(42)},
+		{"negative", NewSqlInt16(-10), int16(-10)},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			val, err := tt.input.Value()
+			if err != nil {
+				t.Fatalf("Value failed: %v", err)
+			}
+			if val != tt.expected {
+				t.Errorf("expected %v, got %v", tt.expected, val)
+			}
+		})
+	}
+}
+
+func TestNewSqlInt16_JSON(t *testing.T) {
+	n := NewSqlInt16(42)
+
+	// Marshal
+	data, err := json.Marshal(n)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	expected := "42"
+	if string(data) != expected {
+		t.Errorf("expected %s, got %s", expected, string(data))
+	}
+
+	// Unmarshal
+	var n2 SqlInt16
+	if err := json.Unmarshal([]byte("123"), &n2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if n2.Int64() != 123 {
+		t.Errorf("expected 123, got %d", n2.Int64())
+	}
+}
+
+// TestNewSqlInt64 tests NewSqlInt64 type
+func TestNewSqlInt64(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    interface{}
+		expected SqlInt64
+	}{
+		{"int", 42, NewSqlInt64(42)},
+		{"int32", int32(100), NewSqlInt64(100)},
+		{"int64", int64(9223372036854775807), NewSqlInt64(9223372036854775807)},
+		{"uint32", uint32(100), NewSqlInt64(100)},
+		{"uint64", uint64(200), NewSqlInt64(200)},
+		{"nil", nil, SqlInt64{}},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var n SqlInt64
+			if err := n.Scan(tt.input); err != nil {
+				t.Fatalf("Scan failed: %v", err)
+			}
+			if n != tt.expected {
+				t.Errorf("expected %v, got %v", tt.expected, n)
+			}
+		})
+	}
+}
+
+// TestSqlFloat64 tests SqlFloat64 type
+func TestSqlFloat64(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    interface{}
+		expected float64
+		valid    bool
+	}{
+		{"float64", float64(3.14), 3.14, true},
+		{"float32", float32(2.5), 2.5, true},
+		{"int", 42, 42.0, true},
+		{"int64", int64(100), 100.0, true},
+		{"nil", nil, 0, false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var n SqlFloat64
+			if err := n.Scan(tt.input); err != nil {
+				t.Fatalf("Scan failed: %v", err)
+			}
+			if n.Valid != tt.valid {
+				t.Errorf("expected valid=%v, got valid=%v", tt.valid, n.Valid)
+			}
+			if tt.valid && n.Float64() != tt.expected {
+				t.Errorf("expected %v, got %v", tt.expected, n.Float64())
+			}
+		})
+	}
+}
+
+// TestSqlTimeStamp tests SqlTimeStamp type
+func TestSqlTimeStamp(t *testing.T) {
+	now := time.Now()
+
+	tests := []struct {
+		name  string
+		input interface{}
+	}{
+		{"time.Time", now},
+		{"string RFC3339", now.Format(time.RFC3339)},
+		{"string date", "2024-01-15"},
+		{"string datetime", "2024-01-15T10:30:00"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var ts SqlTimeStamp
+			if err := ts.Scan(tt.input); err != nil {
+				t.Fatalf("Scan failed: %v", err)
+			}
+			if ts.Time().IsZero() {
+				t.Error("expected non-zero time")
+			}
+		})
+	}
+}
+
+func TestSqlTimeStamp_JSON(t *testing.T) {
+	now := time.Date(2024, 1, 15, 10, 30, 45, 0, time.UTC)
+	ts := NewSqlTimeStamp(now)
+
+	// Marshal
+	data, err := json.Marshal(ts)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	expected := `"2024-01-15T10:30:45"`
+	if string(data) != expected {
+		t.Errorf("expected %s, got %s", expected, string(data))
+	}
+
+	// Unmarshal
+	var ts2 SqlTimeStamp
+	if err := json.Unmarshal([]byte(`"2024-01-15T10:30:45"`), &ts2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if ts2.Time().Year() != 2024 {
+		t.Errorf("expected year 2024, got %d", ts2.Time().Year())
+	}
+
+	// Test null
+	var ts3 SqlTimeStamp
+	if err := json.Unmarshal([]byte("null"), &ts3); err != nil {
+		t.Fatalf("Unmarshal null failed: %v", err)
+	}
+}
+
+// TestSqlDate tests SqlDate type
+func TestSqlDate(t *testing.T) {
+	now := time.Now()
+
+	tests := []struct {
+		name  string
+		input interface{}
+	}{
+		{"time.Time", now},
+		{"string date", "2024-01-15"},
+		{"string UK format", "15/01/2024"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var d SqlDate
+			if err := d.Scan(tt.input); err != nil {
+				t.Fatalf("Scan failed: %v", err)
+			}
+			if d.String() == "0" {
+				t.Error("expected non-zero date")
+			}
+		})
+	}
+}
+
+func TestSqlDate_JSON(t *testing.T) {
+	date := NewSqlDate(time.Date(2024, 1, 15, 0, 0, 0, 0, time.UTC))
+
+	// Marshal
+	data, err := json.Marshal(date)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	expected := `"2024-01-15"`
+	if string(data) != expected {
+		t.Errorf("expected %s, got %s", expected, string(data))
+	}
+
+	// Unmarshal
+	var d2 SqlDate
+	if err := json.Unmarshal([]byte(`"2024-01-15"`), &d2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+}
+
+// TestSqlTime tests SqlTime type
+func TestSqlTime(t *testing.T) {
+	now := time.Now()
+
+	tests := []struct {
+		name     string
+		input    interface{}
+		expected string
+	}{
+		{"time.Time", now, now.Format("15:04:05")},
+		{"string time", "10:30:45", "10:30:45"},
+		{"string short time", "10:30", "10:30:00"},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var tm SqlTime
+			if err := tm.Scan(tt.input); err != nil {
+				t.Fatalf("Scan failed: %v", err)
+			}
+			if tm.String() != tt.expected {
+				t.Errorf("expected %s, got %s", tt.expected, tm.String())
+			}
+		})
+	}
+}
+
+// TestSqlJSONB tests SqlJSONB type
+func TestSqlJSONB_Scan(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    interface{}
+		expected string
+	}{
+		{"string JSON object", `{"key":"value"}`, `{"key":"value"}`},
+		{"string JSON array", `[1,2,3]`, `[1,2,3]`},
+		{"bytes", []byte(`{"test":true}`), `{"test":true}`},
+		{"nil", nil, ""},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var j SqlJSONB
+			if err := j.Scan(tt.input); err != nil {
+				t.Fatalf("Scan failed: %v", err)
+			}
+			if tt.expected == "" && j == nil {
+				return // nil case
+			}
+			if string(j) != tt.expected {
+				t.Errorf("expected %s, got %s", tt.expected, string(j))
+			}
+		})
+	}
+}
+
+func TestSqlJSONB_Value(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    SqlJSONB
+		expected string
+		wantErr  bool
+	}{
+		{"valid object", SqlJSONB(`{"key":"value"}`), `{"key":"value"}`, false},
+		{"valid array", SqlJSONB(`[1,2,3]`), `[1,2,3]`, false},
+		{"empty", SqlJSONB{}, "", false},
+		{"nil", nil, "", false},
+		{"invalid JSON", SqlJSONB(`{invalid`), "", true},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			val, err := tt.input.Value()
+			if tt.wantErr {
+				if err == nil {
+					t.Error("expected error, got nil")
+				}
+				return
+			}
+			if err != nil {
+				t.Fatalf("Value failed: %v", err)
+			}
+			if tt.expected == "" && val == nil {
+				return // nil case
+			}
+			if val.(string) != tt.expected {
+				t.Errorf("expected %s, got %s", tt.expected, val)
+			}
+		})
+	}
+}
+
+func TestSqlJSONB_JSON(t *testing.T) {
+	// Marshal
+	j := SqlJSONB(`{"name":"test","count":42}`)
+	data, err := json.Marshal(j)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var result map[string]interface{}
+	if err := json.Unmarshal(data, &result); err != nil {
+		t.Fatalf("Unmarshal result failed: %v", err)
+	}
+	if result["name"] != "test" {
+		t.Errorf("expected name=test, got %v", result["name"])
+	}
+
+	// Unmarshal
+	var j2 SqlJSONB
+	if err := json.Unmarshal([]byte(`{"key":"value"}`), &j2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if string(j2) != `{"key":"value"}` {
+		t.Errorf("expected {\"key\":\"value\"}, got %s", string(j2))
+	}
+
+	// Test null
+	var j3 SqlJSONB
+	if err := json.Unmarshal([]byte("null"), &j3); err != nil {
+		t.Fatalf("Unmarshal null failed: %v", err)
+	}
+}
+
+func TestSqlJSONB_AsMap(t *testing.T) {
+	tests := []struct {
+		name    string
+		input   SqlJSONB
+		wantErr bool
+		wantNil bool
+	}{
+		{"valid object", SqlJSONB(`{"name":"test","age":30}`), false, false},
+		{"empty", SqlJSONB{}, false, true},
+		{"nil", nil, false, true},
+		{"invalid JSON", SqlJSONB(`{invalid`), true, false},
+		{"array not object", SqlJSONB(`[1,2,3]`), true, false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			m, err := tt.input.AsMap()
+			if tt.wantErr {
+				if err == nil {
+					t.Error("expected error, got nil")
+				}
+				return
+			}
+			if err != nil {
+				t.Fatalf("AsMap failed: %v", err)
+			}
+			if tt.wantNil {
+				if m != nil {
+					t.Errorf("expected nil, got %v", m)
+				}
+				return
+			}
+			if m == nil {
+				t.Error("expected non-nil map")
+			}
+		})
+	}
+}
+
+func TestSqlJSONB_AsSlice(t *testing.T) {
+	tests := []struct {
+		name    string
+		input   SqlJSONB
+		wantErr bool
+		wantNil bool
+	}{
+		{"valid array", SqlJSONB(`[1,2,3]`), false, false},
+		{"empty", SqlJSONB{}, false, true},
+		{"nil", nil, false, true},
+		{"invalid JSON", SqlJSONB(`[invalid`), true, false},
+		{"object not array", SqlJSONB(`{"key":"value"}`), true, false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			s, err := tt.input.AsSlice()
+			if tt.wantErr {
+				if err == nil {
+					t.Error("expected error, got nil")
+				}
+				return
+			}
+			if err != nil {
+				t.Fatalf("AsSlice failed: %v", err)
+			}
+			if tt.wantNil {
+				if s != nil {
+					t.Errorf("expected nil, got %v", s)
+				}
+				return
+			}
+			if s == nil {
+				t.Error("expected non-nil slice")
+			}
+		})
+	}
+}
+
+// TestSqlUUID tests SqlUUID type
+func TestSqlUUID_Scan(t *testing.T) {
+	testUUID := uuid.New()
+	testUUIDStr := testUUID.String()
+
+	tests := []struct {
+		name     string
+		input    interface{}
+		expected string
+		valid    bool
+	}{
+		{"string UUID", testUUIDStr, testUUIDStr, true},
+		{"bytes UUID", []byte(testUUIDStr), testUUIDStr, true},
+		{"nil", nil, "", false},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var u SqlUUID
+			if err := u.Scan(tt.input); err != nil {
+				t.Fatalf("Scan failed: %v", err)
+			}
+			if u.Valid != tt.valid {
+				t.Errorf("expected valid=%v, got valid=%v", tt.valid, u.Valid)
+			}
+			if tt.valid && u.String() != tt.expected {
+				t.Errorf("expected %s, got %s", tt.expected, u.String())
+			}
+		})
+	}
+}
+
+func TestSqlUUID_Value(t *testing.T) {
+	testUUID := uuid.New()
+	u := NewSqlUUID(testUUID)
+
+	val, err := u.Value()
+	if err != nil {
+		t.Fatalf("Value failed: %v", err)
+	}
+	// Value() should return a string for driver compatibility
+	if val != testUUID.String() {
+		t.Errorf("expected %s, got %s", testUUID.String(), val)
+	}
+
+	// Test invalid UUID
+	u2 := SqlUUID{Valid: false}
+	val2, err := u2.Value()
+	if err != nil {
+		t.Fatalf("Value failed: %v", err)
+	}
+	if val2 != nil {
+		t.Errorf("expected nil, got %v", val2)
+	}
+}
+
+func TestSqlUUID_JSON(t *testing.T) {
+	testUUID := uuid.New()
+	u := NewSqlUUID(testUUID)
+
+	// Marshal
+	data, err := json.Marshal(u)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	expected := `"` + testUUID.String() + `"`
+	if string(data) != expected {
+		t.Errorf("expected %s, got %s", expected, string(data))
+	}
+
+	// Unmarshal
+	var u2 SqlUUID
+	if err := json.Unmarshal([]byte(`"`+testUUID.String()+`"`), &u2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if u2.String() != testUUID.String() {
+		t.Errorf("expected %s, got %s", testUUID.String(), u2.String())
+	}
+
+	// Test null
+	var u3 SqlUUID
+	if err := json.Unmarshal([]byte("null"), &u3); err != nil {
+		t.Fatalf("Unmarshal null failed: %v", err)
+	}
+	if u3.Valid {
+		t.Error("expected invalid UUID")
+	}
+}
+
+// TestTryIfInt64 tests the TryIfInt64 helper function
+func TestTryIfInt64(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    interface{}
+		def      int64
+		expected int64
+	}{
+		{"string valid", "123", 0, 123},
+		{"string invalid", "abc", 99, 99},
+		{"int", 42, 0, 42},
+		{"int32", int32(100), 0, 100},
+		{"int64", int64(200), 0, 200},
+		{"uint32", uint32(50), 0, 50},
+		{"uint64", uint64(75), 0, 75},
+		{"float32", float32(3.14), 0, 3},
+		{"float64", float64(2.71), 0, 2},
+		{"bytes", []byte("456"), 0, 456},
+		{"unknown type", struct{}{}, 999, 999},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			result := TryIfInt64(tt.input, tt.def)
+			if result != tt.expected {
+				t.Errorf("expected %d, got %d", tt.expected, result)
+			}
+		})
+	}
+}
+
+// TestSqlString tests SqlString without base64 (plain text)
+func TestSqlString_Scan(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    interface{}
+		expected string
+		valid    bool
+	}{
+		{
+			name:     "plain string",
+			input:    "hello world",
+			expected: "hello world",
+			valid:    true,
+		},
+		{
+			name:     "plain text",
+			input:    "plain text",
+			expected: "plain text",
+			valid:    true,
+		},
+		{
+			name:     "bytes as string",
+			input:    []byte("raw bytes"),
+			expected: "raw bytes",
+			valid:    true,
+		},
+		{
+			name:     "nil value",
+			input:    nil,
+			expected: "",
+			valid:    false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var s SqlString
+			if err := s.Scan(tt.input); err != nil {
+				t.Fatalf("Scan failed: %v", err)
+			}
+			if s.Valid != tt.valid {
+				t.Errorf("expected valid=%v, got valid=%v", tt.valid, s.Valid)
+			}
+			if tt.valid && s.String() != tt.expected {
+				t.Errorf("expected %q, got %q", tt.expected, s.String())
+			}
+		})
+	}
+}
+
+func TestSqlString_JSON(t *testing.T) {
+	tests := []struct {
+		name           string
+		inputValue     string
+		expectedJSON   string
+		expectedDecode string
+	}{
+		{
+			name:           "simple string",
+			inputValue:     "hello world",
+			expectedJSON:   `"hello world"`, // plain text, not base64
+			expectedDecode: "hello world",
+		},
+		{
+			name:           "special characters",
+			inputValue:     "test@#$%",
+			expectedJSON:   `"test@#$%"`, // plain text, not base64
+			expectedDecode: "test@#$%",
+		},
+		{
+			name:           "unicode string",
+			inputValue:     "Hello 世界",
+			expectedJSON:   `"Hello 世界"`, // plain text, not base64
+			expectedDecode: "Hello 世界",
+		},
+		{
+			name:           "empty string",
+			inputValue:     "",
+			expectedJSON:   `""`,
+			expectedDecode: "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Test MarshalJSON
+			s := NewSqlString(tt.inputValue)
+			data, err := json.Marshal(s)
+			if err != nil {
+				t.Fatalf("Marshal failed: %v", err)
+			}
+			if string(data) != tt.expectedJSON {
+				t.Errorf("Marshal: expected %s, got %s", tt.expectedJSON, string(data))
+			}
+
+			// Test UnmarshalJSON
+			var s2 SqlString
+			if err := json.Unmarshal(data, &s2); err != nil {
+				t.Fatalf("Unmarshal failed: %v", err)
+			}
+			if !s2.Valid {
+				t.Error("expected valid=true after unmarshal")
+			}
+			if s2.String() != tt.expectedDecode {
+				t.Errorf("Unmarshal: expected %q, got %q", tt.expectedDecode, s2.String())
+			}
+		})
+	}
+}
+
+func TestSqlString_JSON_Null(t *testing.T) {
+	// Test null handling
+	var s SqlString
+	if err := json.Unmarshal([]byte("null"), &s); err != nil {
+		t.Fatalf("Unmarshal null failed: %v", err)
+	}
+	if s.Valid {
+		t.Error("expected invalid after unmarshaling null")
+	}
+
+	// Test marshal null
+	data, err := json.Marshal(s)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(data) != "null" {
+		t.Errorf("expected null, got %s", string(data))
+	}
+}
+
+// TestSqlByteArray_Base64 tests SqlByteArray with base64 encoding/decoding
+func TestSqlByteArray_Base64_Scan(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    interface{}
+		expected []byte
+		valid    bool
+	}{
+		{
+			name:     "base64 encoded bytes from SQL",
+			input:    "aGVsbG8gd29ybGQ=", // "hello world" in base64
+			expected: []byte("hello world"),
+			valid:    true,
+		},
+		{
+			name:     "plain bytes fallback",
+			input:    "plain text",
+			expected: []byte("plain text"),
+			valid:    true,
+		},
+		{
+			name:     "bytes base64 encoded",
+			input:    []byte("SGVsbG8gR29waGVy"), // "Hello Gopher" in base64
+			expected: []byte("Hello Gopher"),
+			valid:    true,
+		},
+		{
+			name:     "bytes plain fallback",
+			input:    []byte("raw bytes"),
+			expected: []byte("raw bytes"),
+			valid:    true,
+		},
+		{
+			name:     "binary data",
+			input:    "AQIDBA==", // []byte{1, 2, 3, 4} in base64
+			expected: []byte{1, 2, 3, 4},
+			valid:    true,
+		},
+		{
+			name:     "nil value",
+			input:    nil,
+			expected: nil,
+			valid:    false,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			var b SqlByteArray
+			if err := b.Scan(tt.input); err != nil {
+				t.Fatalf("Scan failed: %v", err)
+			}
+			if b.Valid != tt.valid {
+				t.Errorf("expected valid=%v, got valid=%v", tt.valid, b.Valid)
+			}
+			if tt.valid {
+				if string(b.Val) != string(tt.expected) {
+					t.Errorf("expected %q, got %q", tt.expected, b.Val)
+				}
+			}
+		})
+	}
+}
+
+func TestSqlByteArray_Base64_JSON(t *testing.T) {
+	tests := []struct {
+		name           string
+		inputValue     []byte
+		expectedJSON   string
+		expectedDecode []byte
+	}{
+		{
+			name:           "text bytes",
+			inputValue:     []byte("hello world"),
+			expectedJSON:   `"aGVsbG8gd29ybGQ="`, // base64 encoded
+			expectedDecode: []byte("hello world"),
+		},
+		{
+			name:           "binary data",
+			inputValue:     []byte{0x01, 0x02, 0x03, 0x04, 0xFF},
+			expectedJSON:   `"AQIDBP8="`, // base64 encoded
+			expectedDecode: []byte{0x01, 0x02, 0x03, 0x04, 0xFF},
+		},
+		{
+			name:           "empty bytes",
+			inputValue:     []byte{},
+			expectedJSON:   `""`, // base64 of empty bytes
+			expectedDecode: []byte{},
+		},
+		{
+			name:           "unicode bytes",
+			inputValue:     []byte("Hello 世界"),
+			expectedJSON:   `"SGVsbG8g5LiW55WM"`, // base64 encoded
+			expectedDecode: []byte("Hello 世界"),
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			// Test MarshalJSON
+			b := NewSqlByteArray(tt.inputValue)
+			data, err := json.Marshal(b)
+			if err != nil {
+				t.Fatalf("Marshal failed: %v", err)
+			}
+			if string(data) != tt.expectedJSON {
+				t.Errorf("Marshal: expected %s, got %s", tt.expectedJSON, string(data))
+			}
+
+			// Test UnmarshalJSON
+			var b2 SqlByteArray
+			if err := json.Unmarshal(data, &b2); err != nil {
+				t.Fatalf("Unmarshal failed: %v", err)
+			}
+			if !b2.Valid {
+				t.Error("expected valid=true after unmarshal")
+			}
+			if string(b2.Val) != string(tt.expectedDecode) {
+				t.Errorf("Unmarshal: expected %v, got %v", tt.expectedDecode, b2.Val)
+			}
+		})
+	}
+}
+
+func TestSqlByteArray_Base64_JSON_Null(t *testing.T) {
+	// Test null handling
+	var b SqlByteArray
+	if err := json.Unmarshal([]byte("null"), &b); err != nil {
+		t.Fatalf("Unmarshal null failed: %v", err)
+	}
+	if b.Valid {
+		t.Error("expected invalid after unmarshaling null")
+	}
+
+	// Test marshal null
+	data, err := json.Marshal(b)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(data) != "null" {
+		t.Errorf("expected null, got %s", string(data))
+	}
+}
+
+func TestSqlByteArray_Value(t *testing.T) {
+	tests := []struct {
+		name     string
+		input    SqlByteArray
+		expected interface{}
+	}{
+		{
+			name:     "valid bytes",
+			input:    NewSqlByteArray([]byte("test data")),
+			expected: []byte("test data"),
+		},
+		{
+			name:     "empty bytes",
+			input:    NewSqlByteArray([]byte{}),
+			expected: []byte{},
+		},
+		{
+			name:     "invalid",
+			input:    SqlByteArray{Valid: false},
+			expected: nil,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			val, err := tt.input.Value()
+			if err != nil {
+				t.Fatalf("Value failed: %v", err)
+			}
+			if tt.expected == nil && val != nil {
+				t.Errorf("expected nil, got %v", val)
+			}
+			if tt.expected != nil && val == nil {
+				t.Errorf("expected %v, got nil", tt.expected)
+			}
+			if tt.expected != nil && val != nil {
+				if string(val.([]byte)) != string(tt.expected.([]byte)) {
+					t.Errorf("expected %v, got %v", tt.expected, val)
+				}
+			}
+		})
+	}
+}
+
+// TestSqlString_RoundTrip tests complete round-trip: Go -> JSON -> Go -> SQL -> Go
+func TestSqlString_RoundTrip(t *testing.T) {
+	original := "Test String with Special Chars: @#$%^&*()"
+
+	// Go -> JSON
+	s1 := NewSqlString(original)
+	jsonData, err := json.Marshal(s1)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+
+	// JSON -> Go
+	var s2 SqlString
+	if err := json.Unmarshal(jsonData, &s2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+
+	// Go -> SQL (Value)
+	_, err = s2.Value()
+	if err != nil {
+		t.Fatalf("Value failed: %v", err)
+	}
+
+	// SQL -> Go (Scan plain text)
+	var s3 SqlString
+	// Simulate SQL driver returning plain text value
+	if err := s3.Scan(original); err != nil {
+		t.Fatalf("Scan failed: %v", err)
+	}
+
+	// Verify round-trip
+	if s3.String() != original {
+		t.Errorf("Round-trip failed: expected %q, got %q", original, s3.String())
+	}
+}
+
+// TestSqlByteArray_Base64_RoundTrip tests complete round-trip: Go -> JSON -> Go -> SQL -> Go
+func TestSqlByteArray_Base64_RoundTrip(t *testing.T) {
+	original := []byte{0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x20, 0xFF, 0xFE} // "Hello " + binary data
+
+	// Go -> JSON
+	b1 := NewSqlByteArray(original)
+	jsonData, err := json.Marshal(b1)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+
+	// JSON -> Go
+	var b2 SqlByteArray
+	if err := json.Unmarshal(jsonData, &b2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+
+	// Go -> SQL (Value)
+	_, err = b2.Value()
+	if err != nil {
+		t.Fatalf("Value failed: %v", err)
+	}
+
+	// SQL -> Go (Scan with base64)
+	var b3 SqlByteArray
+	// Simulate SQL driver returning base64 encoded value
+	if err := b3.Scan("SGVsbG8g//4="); err != nil {
+		t.Fatalf("Scan failed: %v", err)
+	}
+
+	// Verify round-trip
+	if string(b3.Val) != string(original) {
+		t.Errorf("Round-trip failed: expected %v, got %v", original, b3.Val)
+	}
+}
+

pkg/sqltypes/sql_types_yaml_xml_test.go

@@ -0,0 +1,678 @@
+package sqltypes
+
+import (
+	"encoding/xml"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"gopkg.in/yaml.v3"
+)
+
+// ── SqlNull: YAML ────────────────────────────────────────────────────────────
+
+func TestSqlNull_YAML_Int(t *testing.T) {
+	n := NewSqlInt32(42)
+	data, err := yaml.Marshal(n)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(data) != "42\n" {
+		t.Errorf("expected \"42\\n\", got %q", string(data))
+	}
+
+	var n2 SqlInt32
+	if err := yaml.Unmarshal(data, &n2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if n2.Int64() != 42 {
+		t.Errorf("expected 42, got %d", n2.Int64())
+	}
+}
+
+func TestSqlNull_YAML_Null(t *testing.T) {
+	var n SqlInt32
+	data, err := yaml.Marshal(n)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(data) != "null\n" {
+		t.Errorf("expected \"null\\n\", got %q", string(data))
+	}
+
+	var n2 SqlInt32
+	if err := yaml.Unmarshal([]byte("null\n"), &n2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if n2.Valid {
+		t.Error("expected invalid after unmarshaling null")
+	}
+
+	// ~ is also a YAML null.
+	var n3 SqlInt32
+	if err := yaml.Unmarshal([]byte("~\n"), &n3); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if n3.Valid {
+		t.Error("expected invalid after unmarshaling ~")
+	}
+}
+
+func TestSqlNull_YAML_String(t *testing.T) {
+	s := NewSqlString("hello world")
+	data, err := yaml.Marshal(s)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var s2 SqlString
+	if err := yaml.Unmarshal(data, &s2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if s2.String() != "hello world" {
+		t.Errorf("expected %q, got %q", "hello world", s2.String())
+	}
+}
+
+func TestSqlNull_YAML_UUID(t *testing.T) {
+	id := uuid.New()
+	u := NewSqlUUID(id)
+	data, err := yaml.Marshal(u)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(data) != id.String()+"\n" {
+		t.Errorf("expected %q, got %q", id.String()+"\n", string(data))
+	}
+	var u2 SqlUUID
+	if err := yaml.Unmarshal(data, &u2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if u2.UUID() != id {
+		t.Errorf("expected %v, got %v", id, u2.UUID())
+	}
+}
+
+func TestSqlNull_YAML_ByteArray_Base64(t *testing.T) {
+	orig := []byte{0x01, 0x02, 0xFF}
+	b := NewSqlByteArray(orig)
+	data, err := yaml.Marshal(b)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var b2 SqlByteArray
+	if err := yaml.Unmarshal(data, &b2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if string(b2.Val) != string(orig) {
+		t.Errorf("expected %v, got %v", orig, b2.Val)
+	}
+}
+
+// ── SqlNull: XML ─────────────────────────────────────────────────────────────
+
+type xmlIntWrapper struct {
+	XMLName xml.Name `xml:"root"`
+	Value   SqlInt32 `xml:"value"`
+}
+
+func TestSqlNull_XML_Int(t *testing.T) {
+	w := xmlIntWrapper{Value: NewSqlInt32(99)}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlIntWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if w2.Value.Int64() != 99 {
+		t.Errorf("expected 99, got %d", w2.Value.Int64())
+	}
+}
+
+func TestSqlNull_XML_Null(t *testing.T) {
+	w := xmlIntWrapper{}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlIntWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if w2.Value.Valid {
+		t.Errorf("expected invalid, got %v", w2.Value)
+	}
+}
+
+type xmlUUIDWrapper struct {
+	XMLName xml.Name `xml:"root"`
+	ID      SqlUUID  `xml:"id"`
+}
+
+func TestSqlNull_XML_UUID(t *testing.T) {
+	id := uuid.New()
+	w := xmlUUIDWrapper{ID: NewSqlUUID(id)}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlUUIDWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if w2.ID.UUID() != id {
+		t.Errorf("expected %v, got %v", id, w2.ID.UUID())
+	}
+}
+
+type xmlByteWrapper struct {
+	XMLName xml.Name     `xml:"root"`
+	Data    SqlByteArray `xml:"data"`
+}
+
+func TestSqlNull_XML_ByteArray_Base64(t *testing.T) {
+	orig := []byte{0xDE, 0xAD, 0xBE, 0xEF}
+	w := xmlByteWrapper{Data: NewSqlByteArray(orig)}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlByteWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if string(w2.Data.Val) != string(orig) {
+		t.Errorf("expected %v, got %v", orig, w2.Data.Val)
+	}
+}
+
+// ── SqlTimeStamp / SqlDate / SqlTime: YAML + XML ────────────────────────────
+
+func TestSqlTimeStamp_YAML(t *testing.T) {
+	ts := NewSqlTimeStamp(time.Date(2024, 6, 15, 9, 30, 0, 0, time.UTC))
+	data, err := yaml.Marshal(ts)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(data) != "2024-06-15T09:30:00\n" {
+		t.Errorf("unexpected YAML: %q", string(data))
+	}
+	var ts2 SqlTimeStamp
+	if err := yaml.Unmarshal(data, &ts2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if ts2.Time().Format("2006-01-02T15:04:05") != "2024-06-15T09:30:00" {
+		t.Errorf("expected 2024-06-15T09:30:00, got %v", ts2.Time())
+	}
+
+	var zero SqlTimeStamp
+	zdata, err := yaml.Marshal(zero)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(zdata) != "null\n" {
+		t.Errorf("expected null, got %q", zdata)
+	}
+}
+
+type xmlTimeStampWrapper struct {
+	XMLName xml.Name     `xml:"root"`
+	At      SqlTimeStamp `xml:"at"`
+}
+
+func TestSqlTimeStamp_XML(t *testing.T) {
+	w := xmlTimeStampWrapper{At: NewSqlTimeStamp(time.Date(2024, 6, 15, 9, 30, 0, 0, time.UTC))}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlTimeStampWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if w2.At.Time().Format("2006-01-02T15:04:05") != "2024-06-15T09:30:00" {
+		t.Errorf("expected 2024-06-15T09:30:00, got %v", w2.At.Time())
+	}
+}
+
+func TestSqlDate_YAML(t *testing.T) {
+	d := NewSqlDate(time.Date(2024, 6, 15, 0, 0, 0, 0, time.UTC))
+	data, err := yaml.Marshal(d)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(data) != "\"2024-06-15\"\n" {
+		t.Errorf("unexpected YAML: %q", string(data))
+	}
+	var d2 SqlDate
+	if err := yaml.Unmarshal(data, &d2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if d2.String() != "2024-06-15" {
+		t.Errorf("expected 2024-06-15, got %q", d2.String())
+	}
+}
+
+type xmlDateWrapper struct {
+	XMLName xml.Name `xml:"root"`
+	Day     SqlDate  `xml:"day"`
+}
+
+func TestSqlDate_XML(t *testing.T) {
+	w := xmlDateWrapper{Day: NewSqlDate(time.Date(2024, 6, 15, 0, 0, 0, 0, time.UTC))}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlDateWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if w2.Day.String() != "2024-06-15" {
+		t.Errorf("expected 2024-06-15, got %q", w2.Day.String())
+	}
+}
+
+func TestSqlTime_YAML(t *testing.T) {
+	tm := NewSqlTime(time.Date(0, 1, 1, 14, 5, 9, 0, time.UTC))
+	data, err := yaml.Marshal(tm)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(data) != "\"14:05:09\"\n" {
+		t.Errorf("unexpected YAML: %q", string(data))
+	}
+	var tm2 SqlTime
+	if err := yaml.Unmarshal(data, &tm2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if tm2.String() != "14:05:09" {
+		t.Errorf("expected 14:05:09, got %q", tm2.String())
+	}
+}
+
+type xmlTimeWrapper struct {
+	XMLName xml.Name `xml:"root"`
+	At      SqlTime  `xml:"at"`
+}
+
+func TestSqlTime_XML(t *testing.T) {
+	w := xmlTimeWrapper{At: NewSqlTime(time.Date(0, 1, 1, 14, 5, 9, 0, time.UTC))}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlTimeWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if w2.At.String() != "14:05:09" {
+		t.Errorf("expected 14:05:09, got %q", w2.At.String())
+	}
+}
+
+// ── SqlJSONB: YAML + XML ─────────────────────────────────────────────────────
+
+func TestSqlJSONB_YAML(t *testing.T) {
+	j := SqlJSONB(`{"name":"test","count":42}`)
+	data, err := yaml.Marshal(j)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+
+	var decoded map[string]any
+	if err := yaml.Unmarshal(data, &decoded); err != nil {
+		t.Fatalf("failed decoding produced YAML: %v", err)
+	}
+	if decoded["name"] != "test" {
+		t.Errorf("expected name=test, got %v", decoded["name"])
+	}
+
+	var j2 SqlJSONB
+	if err := yaml.Unmarshal(data, &j2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	m, err := j2.AsMap()
+	if err != nil {
+		t.Fatalf("AsMap failed: %v", err)
+	}
+	if m["name"] != "test" {
+		t.Errorf("expected name=test, got %v", m["name"])
+	}
+}
+
+func TestSqlJSONB_YAML_Null(t *testing.T) {
+	var j SqlJSONB
+	data, err := yaml.Marshal(j)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(data) != "null\n" {
+		t.Errorf("expected null, got %q", data)
+	}
+	var j2 SqlJSONB
+	if err := yaml.Unmarshal([]byte("null\n"), &j2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if j2 != nil {
+		t.Errorf("expected nil, got %v", j2)
+	}
+}
+
+type xmlJSONBWrapper struct {
+	XMLName xml.Name `xml:"root"`
+	Meta    SqlJSONB `xml:"meta"`
+}
+
+func TestSqlJSONB_XML(t *testing.T) {
+	w := xmlJSONBWrapper{Meta: SqlJSONB(`{"key":"value"}`)}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlJSONBWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	m, err := w2.Meta.AsMap()
+	if err != nil {
+		t.Fatalf("AsMap failed: %v", err)
+	}
+	if m["key"] != "value" {
+		t.Errorf("expected key=value, got %v", m)
+	}
+}
+
+// ── Array types: YAML ────────────────────────────────────────────────────────
+
+func TestSqlStringArray_YAML(t *testing.T) {
+	a := NewSqlStringArray([]string{"a", "b", "c"})
+	data, err := yaml.Marshal(a)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var a2 SqlStringArray
+	if err := yaml.Unmarshal(data, &a2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if len(a2.Val) != 3 || a2.Val[1] != "b" {
+		t.Errorf("unexpected value %v", a2.Val)
+	}
+}
+
+func TestSqlStringArray_YAML_Null(t *testing.T) {
+	var a SqlStringArray
+	data, err := yaml.Marshal(a)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	if string(data) != "null\n" {
+		t.Errorf("expected null, got %q", data)
+	}
+	var a2 SqlStringArray
+	if err := yaml.Unmarshal([]byte("null\n"), &a2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if a2.Valid {
+		t.Error("expected invalid")
+	}
+}
+
+func TestSqlInt32Array_YAML(t *testing.T) {
+	a := NewSqlInt32Array([]int32{1, 2, 3})
+	data, err := yaml.Marshal(a)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var a2 SqlInt32Array
+	if err := yaml.Unmarshal(data, &a2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	for i, v := range a.Val {
+		if a2.Val[i] != v {
+			t.Errorf("index %d: expected %d, got %d", i, v, a2.Val[i])
+		}
+	}
+}
+
+func TestSqlUUIDArray_YAML(t *testing.T) {
+	ids := []uuid.UUID{uuid.New(), uuid.New()}
+	a := NewSqlUUIDArray(ids)
+	data, err := yaml.Marshal(a)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var a2 SqlUUIDArray
+	if err := yaml.Unmarshal(data, &a2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	for i, v := range ids {
+		if a2.Val[i] != v {
+			t.Errorf("index %d: expected %v, got %v", i, v, a2.Val[i])
+		}
+	}
+}
+
+func TestSqlVector_YAML(t *testing.T) {
+	v := NewSqlVector([]float32{0.1, 0.2, 0.3})
+	data, err := yaml.Marshal(v)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var v2 SqlVector
+	if err := yaml.Unmarshal(data, &v2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	for i, f := range v.Val {
+		if v2.Val[i] != f {
+			t.Errorf("index %d: expected %v, got %v", i, f, v2.Val[i])
+		}
+	}
+}
+
+// ── Array types: XML ─────────────────────────────────────────────────────────
+
+type xmlStringArrayWrapper struct {
+	XMLName xml.Name       `xml:"root"`
+	Tags    SqlStringArray `xml:"tags"`
+}
+
+func TestSqlStringArray_XML(t *testing.T) {
+	w := xmlStringArrayWrapper{Tags: NewSqlStringArray([]string{"x", "y", "z"})}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlStringArrayWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	want := []string{"x", "y", "z"}
+	if len(w2.Tags.Val) != len(want) {
+		t.Fatalf("expected %v, got %v", want, w2.Tags.Val)
+	}
+	for i := range want {
+		if w2.Tags.Val[i] != want[i] {
+			t.Errorf("index %d: expected %q, got %q", i, want[i], w2.Tags.Val[i])
+		}
+	}
+}
+
+func TestSqlStringArray_XML_Empty(t *testing.T) {
+	w := xmlStringArrayWrapper{}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlStringArrayWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	if len(w2.Tags.Val) != 0 {
+		t.Errorf("expected empty slice, got %v", w2.Tags.Val)
+	}
+}
+
+type xmlInt64ArrayWrapper struct {
+	XMLName xml.Name      `xml:"root"`
+	Scores  SqlInt64Array `xml:"scores"`
+}
+
+func TestSqlInt64Array_XML(t *testing.T) {
+	w := xmlInt64ArrayWrapper{Scores: NewSqlInt64Array([]int64{10, 20, 30})}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlInt64ArrayWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	want := []int64{10, 20, 30}
+	for i := range want {
+		if w2.Scores.Val[i] != want[i] {
+			t.Errorf("index %d: expected %d, got %d", i, want[i], w2.Scores.Val[i])
+		}
+	}
+}
+
+type xmlUUIDArrayWrapper struct {
+	XMLName xml.Name     `xml:"root"`
+	IDs     SqlUUIDArray `xml:"ids"`
+}
+
+func TestSqlUUIDArray_XML(t *testing.T) {
+	ids := []uuid.UUID{uuid.New(), uuid.New()}
+	w := xmlUUIDArrayWrapper{IDs: NewSqlUUIDArray(ids)}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlUUIDArrayWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	for i, id := range ids {
+		if w2.IDs.Val[i] != id {
+			t.Errorf("index %d: expected %v, got %v", i, id, w2.IDs.Val[i])
+		}
+	}
+}
+
+type xmlVectorWrapper struct {
+	XMLName   xml.Name  `xml:"root"`
+	Embedding SqlVector `xml:"embedding"`
+}
+
+func TestSqlVector_XML(t *testing.T) {
+	w := xmlVectorWrapper{Embedding: NewSqlVector([]float32{1.5, -2.5})}
+	data, err := xml.Marshal(w)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+	var w2 xmlVectorWrapper
+	if err := xml.Unmarshal(data, &w2); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+	want := []float32{1.5, -2.5}
+	for i := range want {
+		if w2.Embedding.Val[i] != want[i] {
+			t.Errorf("index %d: expected %v, got %v", i, want[i], w2.Embedding.Val[i])
+		}
+	}
+}
+
+// ── Combined struct round-trip ───────────────────────────────────────────────
+
+type yamlXMLRecord struct {
+	XMLName xml.Name       `xml:"record" yaml:"-" json:"-"`
+	ID      SqlUUID        `xml:"id" yaml:"id"`
+	Name    SqlString      `xml:"name" yaml:"name"`
+	Age     SqlInt32       `xml:"age" yaml:"age"`
+	Active  SqlBool        `xml:"active" yaml:"active"`
+	Created SqlTimeStamp   `xml:"created" yaml:"created"`
+	Tags    SqlStringArray `xml:"tags" yaml:"tags"`
+}
+
+func TestCombinedRecord_YAML_RoundTrip(t *testing.T) {
+	id := uuid.New()
+	original := yamlXMLRecord{
+		ID:      NewSqlUUID(id),
+		Name:    NewSqlString("Ada"),
+		Age:     NewSqlInt32(36),
+		Active:  NewSqlBool(true),
+		Created: NewSqlTimeStamp(time.Date(2024, 3, 10, 12, 30, 0, 0, time.UTC)),
+		Tags:    NewSqlStringArray([]string{"engineer", "mathematician"}),
+	}
+
+	data, err := yaml.Marshal(original)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+
+	var decoded yamlXMLRecord
+	if err := yaml.Unmarshal(data, &decoded); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+
+	if decoded.ID.UUID() != id {
+		t.Errorf("ID: expected %v, got %v", id, decoded.ID.UUID())
+	}
+	if decoded.Name.String() != "Ada" {
+		t.Errorf("Name: expected Ada, got %q", decoded.Name.String())
+	}
+	if decoded.Age.Int64() != 36 {
+		t.Errorf("Age: expected 36, got %d", decoded.Age.Int64())
+	}
+	if !decoded.Active.Bool() {
+		t.Error("Active: expected true")
+	}
+	if decoded.Created.Time().Format("2006-01-02T15:04:05") != "2024-03-10T12:30:00" {
+		t.Errorf("Created: expected 2024-03-10T12:30:00, got %v", decoded.Created.Time())
+	}
+	if len(decoded.Tags.Val) != 2 || decoded.Tags.Val[0] != "engineer" {
+		t.Errorf("Tags: unexpected value %v", decoded.Tags.Val)
+	}
+}
+
+func TestCombinedRecord_XML_RoundTrip(t *testing.T) {
+	id := uuid.New()
+	original := yamlXMLRecord{
+		ID:      NewSqlUUID(id),
+		Name:    NewSqlString("Ada"),
+		Age:     NewSqlInt32(36),
+		Active:  NewSqlBool(true),
+		Created: NewSqlTimeStamp(time.Date(2024, 3, 10, 12, 30, 0, 0, time.UTC)),
+		Tags:    NewSqlStringArray([]string{"engineer", "mathematician"}),
+	}
+
+	data, err := xml.Marshal(original)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+
+	var decoded yamlXMLRecord
+	if err := xml.Unmarshal(data, &decoded); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+
+	if decoded.ID.UUID() != id {
+		t.Errorf("ID: expected %v, got %v", id, decoded.ID.UUID())
+	}
+	if decoded.Name.String() != "Ada" {
+		t.Errorf("Name: expected Ada, got %q", decoded.Name.String())
+	}
+	if decoded.Age.Int64() != 36 {
+		t.Errorf("Age: expected 36, got %d", decoded.Age.Int64())
+	}
+	if !decoded.Active.Bool() {
+		t.Error("Active: expected true")
+	}
+	if decoded.Created.Time().Format("2006-01-02T15:04:05") != "2024-03-10T12:30:00" {
+		t.Errorf("Created: expected 2024-03-10T12:30:00, got %v", decoded.Created.Time())
+	}
+	if len(decoded.Tags.Val) != 2 || decoded.Tags.Val[0] != "engineer" {
+		t.Errorf("Tags: unexpected value %v", decoded.Tags.Val)
+	}
+}

pkg/sqltypes/struct_json_test.go

@@ -0,0 +1,164 @@
+package sqltypes
+
+import (
+	"encoding/json"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+// record mimics a typical DB model composed of sqltypes fields, exercising
+// marshalling/unmarshalling of the whole set together as encoding/json would
+// when used on a real struct (not just the individual types in isolation).
+type record struct {
+	ID        SqlUUID        `json:"id"`
+	Name      SqlString      `json:"name"`
+	Bio       SqlString      `json:"bio"`
+	Age       SqlInt32       `json:"age"`
+	Score     SqlFloat64     `json:"score"`
+	Active    SqlBool        `json:"active"`
+	CreatedAt SqlTimeStamp   `json:"created_at"`
+	BirthDate SqlDate        `json:"birth_date"`
+	Avatar    SqlByteArray   `json:"avatar"`
+	Tags      SqlStringArray `json:"tags"`
+	Scores    SqlInt32Array  `json:"scores"`
+	Metadata  SqlJSONB       `json:"metadata"`
+	Embedding SqlVector      `json:"embedding"`
+	Extras    []uuid.UUID    `json:"-"`
+}
+
+func TestStruct_JSON_RoundTrip_AllFieldsPresent(t *testing.T) {
+	id := uuid.New()
+	createdAt := time.Date(2024, 3, 10, 12, 30, 0, 0, time.UTC)
+	birthDate := time.Date(1990, 5, 20, 0, 0, 0, 0, time.UTC)
+
+	original := record{
+		ID:        NewSqlUUID(id),
+		Name:      NewSqlString("Ada Lovelace"),
+		Bio:       SqlString{}, // intentionally null
+		Age:       NewSqlInt32(36),
+		Score:     NewSqlFloat64(98.6),
+		Active:    NewSqlBool(true),
+		CreatedAt: NewSqlTimeStamp(createdAt),
+		BirthDate: NewSqlDate(birthDate),
+		Avatar:    NewSqlByteArray([]byte{0xDE, 0xAD, 0xBE, 0xEF}),
+		Tags:      NewSqlStringArray([]string{"engineer", "mathematician"}),
+		Scores:    NewSqlInt32Array([]int32{10, 20, 30}),
+		Metadata:  SqlJSONB(`{"role":"admin"}`),
+		Embedding: NewSqlVector([]float32{0.1, 0.2, 0.3}),
+	}
+
+	data, err := json.Marshal(original)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+
+	var decoded record
+	if err := json.Unmarshal(data, &decoded); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+
+	if decoded.ID.UUID() != id {
+		t.Errorf("ID: expected %v, got %v", id, decoded.ID.UUID())
+	}
+	if decoded.Name.String() != "Ada Lovelace" {
+		t.Errorf("Name: expected Ada Lovelace, got %q", decoded.Name.String())
+	}
+	if decoded.Bio.Valid {
+		t.Errorf("Bio: expected invalid/null, got %v", decoded.Bio)
+	}
+	if decoded.Age.Int64() != 36 {
+		t.Errorf("Age: expected 36, got %d", decoded.Age.Int64())
+	}
+	if decoded.Score.Float64() != 98.6 {
+		t.Errorf("Score: expected 98.6, got %v", decoded.Score.Float64())
+	}
+	if !decoded.Active.Bool() {
+		t.Errorf("Active: expected true")
+	}
+	if decoded.CreatedAt.Time().Format("2006-01-02T15:04:05") != createdAt.Format("2006-01-02T15:04:05") {
+		t.Errorf("CreatedAt: expected %v, got %v", createdAt, decoded.CreatedAt.Time())
+	}
+	if decoded.BirthDate.String() != "1990-05-20" {
+		t.Errorf("BirthDate: expected 1990-05-20, got %q", decoded.BirthDate.String())
+	}
+	if string(decoded.Avatar.Val) != string(original.Avatar.Val) {
+		t.Errorf("Avatar: expected %v, got %v", original.Avatar.Val, decoded.Avatar.Val)
+	}
+	if len(decoded.Tags.Val) != 2 || decoded.Tags.Val[0] != "engineer" {
+		t.Errorf("Tags: unexpected value %v", decoded.Tags.Val)
+	}
+	if len(decoded.Scores.Val) != 3 || decoded.Scores.Val[2] != 30 {
+		t.Errorf("Scores: unexpected value %v", decoded.Scores.Val)
+	}
+	m, err := decoded.Metadata.AsMap()
+	if err != nil || m["role"] != "admin" {
+		t.Errorf("Metadata: expected role=admin, got %v (err=%v)", m, err)
+	}
+	if len(decoded.Embedding.Val) != 3 || decoded.Embedding.Val[1] != 0.2 {
+		t.Errorf("Embedding: unexpected value %v", decoded.Embedding.Val)
+	}
+}
+
+func TestStruct_JSON_RoundTrip_AllNull(t *testing.T) {
+	var original record
+
+	data, err := json.Marshal(original)
+	if err != nil {
+		t.Fatalf("Marshal failed: %v", err)
+	}
+
+	var decoded record
+	if err := json.Unmarshal(data, &decoded); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+
+	if decoded.ID.Valid || decoded.Name.Valid || decoded.Age.Valid || decoded.Score.Valid ||
+		decoded.Active.Valid || decoded.CreatedAt.Valid || decoded.BirthDate.Valid ||
+		decoded.Avatar.Valid || decoded.Tags.Valid || decoded.Scores.Valid || decoded.Embedding.Valid {
+		t.Errorf("expected all fields invalid/null after round-trip, got %+v", decoded)
+	}
+	if decoded.Metadata != nil {
+		t.Errorf("expected nil Metadata, got %v", decoded.Metadata)
+	}
+}
+
+func TestStruct_JSON_UnmarshalFromRawJSON(t *testing.T) {
+	raw := `{
+		"id": "3e843d4e-6b3c-4f2e-9a1e-6f0b2f3c9d10",
+		"name": "Grace Hopper",
+		"bio": null,
+		"age": 85,
+		"score": 100,
+		"active": false,
+		"created_at": "2023-12-01T08:00:00",
+		"birth_date": "1906-12-09",
+		"avatar": "AQIDBA==",
+		"tags": ["navy", "compiler"],
+		"scores": [1, 2, 3],
+		"metadata": {"key": "value"},
+		"embedding": [1.0, 2.0]
+	}`
+
+	var decoded record
+	if err := json.Unmarshal([]byte(raw), &decoded); err != nil {
+		t.Fatalf("Unmarshal failed: %v", err)
+	}
+
+	if decoded.Name.String() != "Grace Hopper" {
+		t.Errorf("expected Grace Hopper, got %q", decoded.Name.String())
+	}
+	if decoded.Age.Int64() != 85 {
+		t.Errorf("expected age 85, got %d", decoded.Age.Int64())
+	}
+	if decoded.Active.Valid && decoded.Active.Bool() {
+		t.Errorf("expected active=false")
+	}
+	if string(decoded.Avatar.Val) != string([]byte{1, 2, 3, 4}) {
+		t.Errorf("expected avatar bytes [1 2 3 4], got %v", decoded.Avatar.Val)
+	}
+	if len(decoded.Tags.Val) != 2 || decoded.Tags.Val[1] != "compiler" {
+		t.Errorf("unexpected tags %v", decoded.Tags.Val)
+	}
+}

pkg/sqltypes/uuid_integration_test.go

@@ -0,0 +1,180 @@
+package sqltypes
+
+import (
+	"database/sql"
+	"testing"
+
+	"github.com/google/uuid"
+	_ "modernc.org/sqlite"
+)
+
+// TestUUIDWithRealDatabase tests that SqlUUID works with actual database operations
+func TestUUIDWithRealDatabase(t *testing.T) {
+	// Open an in-memory SQLite database
+	db, err := sql.Open("sqlite", ":memory:")
+	if err != nil {
+		t.Fatalf("Failed to open database: %v", err)
+	}
+	defer db.Close()
+
+	// Create a test table with UUID column
+	_, err = db.Exec(`
+		CREATE TABLE test_users (
+			id INTEGER PRIMARY KEY,
+			user_id TEXT,
+			name TEXT
+		)
+	`)
+	if err != nil {
+		t.Fatalf("Failed to create table: %v", err)
+	}
+
+	// Test 1: Insert with UUID
+	testUUID1 := uuid.New()
+	sqlUUID1 := NewSqlUUID(testUUID1)
+
+	_, err = db.Exec("INSERT INTO test_users (id, user_id, name) VALUES (?, ?, ?)",
+		1, sqlUUID1, "Alice")
+	if err != nil {
+		t.Fatalf("Failed to insert record: %v", err)
+	}
+
+	// Test 2: Update with UUID
+	testUUID2 := uuid.New()
+	sqlUUID2 := NewSqlUUID(testUUID2)
+
+	_, err = db.Exec("UPDATE test_users SET user_id = ? WHERE id = ?",
+		sqlUUID2, 1)
+	if err != nil {
+		t.Fatalf("Failed to update record: %v", err)
+	}
+
+	// Test 3: Read back and verify
+	var retrievedID string
+	var name string
+	err = db.QueryRow("SELECT user_id, name FROM test_users WHERE id = ?", 1).Scan(&retrievedID, &name)
+	if err != nil {
+		t.Fatalf("Failed to query record: %v", err)
+	}
+
+	if retrievedID != testUUID2.String() {
+		t.Errorf("Expected UUID %s, got %s", testUUID2.String(), retrievedID)
+	}
+
+	if name != "Alice" {
+		t.Errorf("Expected name 'Alice', got '%s'", name)
+	}
+
+	// Test 4: Insert with NULL UUID
+	nullUUID := SqlUUID{Valid: false}
+	_, err = db.Exec("INSERT INTO test_users (id, user_id, name) VALUES (?, ?, ?)",
+		2, nullUUID, "Bob")
+	if err != nil {
+		t.Fatalf("Failed to insert record with NULL UUID: %v", err)
+	}
+
+	// Test 5: Read NULL UUID back
+	var retrievedNullID sql.NullString
+	err = db.QueryRow("SELECT user_id FROM test_users WHERE id = ?", 2).Scan(&retrievedNullID)
+	if err != nil {
+		t.Fatalf("Failed to query NULL UUID record: %v", err)
+	}
+
+	if retrievedNullID.Valid {
+		t.Errorf("Expected NULL UUID, got %s", retrievedNullID.String)
+	}
+
+	t.Logf("All database operations with UUID succeeded!")
+}
+
+// TestUUIDValueReturnsString verifies that Value() returns string, not uuid.UUID
+func TestUUIDValueReturnsString(t *testing.T) {
+	testUUID := uuid.New()
+	sqlUUID := NewSqlUUID(testUUID)
+
+	val, err := sqlUUID.Value()
+	if err != nil {
+		t.Fatalf("Value() failed: %v", err)
+	}
+
+	// The value should be a string, not a uuid.UUID
+	strVal, ok := val.(string)
+	if !ok {
+		t.Fatalf("Expected Value() to return string, got %T", val)
+	}
+
+	if strVal != testUUID.String() {
+		t.Errorf("Expected %s, got %s", testUUID.String(), strVal)
+	}
+
+	t.Logf("✓ Value() correctly returns string: %s", strVal)
+}
+
+// CustomStringableType is a custom type that implements fmt.Stringer
+type CustomStringableType string
+
+func (c CustomStringableType) String() string {
+	return "custom:" + string(c)
+}
+
+// TestCustomStringableType verifies that any type implementing fmt.Stringer works
+func TestCustomStringableType(t *testing.T) {
+	customVal := CustomStringableType("test-value")
+	sqlCustom := SqlNull[CustomStringableType]{
+		Val:   customVal,
+		Valid: true,
+	}
+
+	val, err := sqlCustom.Value()
+	if err != nil {
+		t.Fatalf("Value() failed: %v", err)
+	}
+
+	// Should return the result of String() method
+	strVal, ok := val.(string)
+	if !ok {
+		t.Fatalf("Expected Value() to return string, got %T", val)
+	}
+
+	expected := "custom:test-value"
+	if strVal != expected {
+		t.Errorf("Expected %s, got %s", expected, strVal)
+	}
+
+	t.Logf("✓ Custom Stringer type correctly converted to string: %s", strVal)
+}
+
+// TestStringMethodUsesStringer verifies that String() method also uses fmt.Stringer
+func TestStringMethodUsesStringer(t *testing.T) {
+	// Test with UUID
+	testUUID := uuid.New()
+	sqlUUID := NewSqlUUID(testUUID)
+
+	strResult := sqlUUID.String()
+	if strResult != testUUID.String() {
+		t.Errorf("Expected UUID String() to return %s, got %s", testUUID.String(), strResult)
+	}
+	t.Logf("✓ UUID String() method: %s", strResult)
+
+	// Test with custom Stringer type
+	customVal := CustomStringableType("test-value")
+	sqlCustom := SqlNull[CustomStringableType]{
+		Val:   customVal,
+		Valid: true,
+	}
+
+	customStr := sqlCustom.String()
+	expected := "custom:test-value"
+	if customStr != expected {
+		t.Errorf("Expected custom String() to return %s, got %s", expected, customStr)
+	}
+	t.Logf("✓ Custom Stringer String() method: %s", customStr)
+
+	// Test with regular type (should use fmt.Sprintf)
+	sqlInt := NewSqlInt64(42)
+	intStr := sqlInt.String()
+	if intStr != "42" {
+		t.Errorf("Expected int String() to return '42', got '%s'", intStr)
+	}
+	t.Logf("✓ Regular type String() method: %s", intStr)
+}

pkg/ui/editor.go

@@ -2,6 +2,7 @@ package ui
 
 import (
 	"fmt"
+	"sort"
 
 	"github.com/rivo/tview"
 
@@ -69,5 +70,6 @@ func getColumnNames(table *models.Table) []string {
 	for name := range table.Columns {
 		names = append(names, name)
 	}
+	sort.Strings(names)
 	return names
 }

pkg/ui/relation_dataops.go

@@ -1,6 +1,10 @@
 package ui
 
-import "git.warky.dev/wdevs/relspecgo/pkg/models"
+import (
+	"sort"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+)
 
 // Relationship data operations - business logic for relationship management
 
@@ -111,5 +115,6 @@ func (se *SchemaEditor) GetRelationshipNames(schemaIndex, tableIndex int) []stri
 	for name := range table.Relationships {
 		names = append(names, name)
 	}
+	sort.Strings(names)
 	return names
 }

pkg/writers/bun/README.md

@@ -6,6 +6,8 @@ Generates Go source files with Bun model definitions from database schema inform
 
 The Bun Writer converts RelSpec's internal database model representation into Go source code with Bun struct definitions, complete with proper tags, relationships, and table configuration.
 
+With `--types sqltypes`, nullable fields use the [`pkg/sqltypes`](../../sqltypes/README.md) package.
+
 ## Features
 
 - Generates Bun-compatible Go structs
@@ -46,45 +48,51 @@ func main() {
 ### CLI Examples
 
 ```bash
-# Generate Bun models from a DBML schema (default: resolvespec types)
+# Generate Bun models from a DBML schema (default: baselib pointer types)
 relspec convert --from dbml --from-path schema.dbml \
   --to bun --to-path models.go --package models
 
-# Use standard library database/sql nullable types instead of resolvespec
+# Use standard library database/sql nullable types instead
 relspec convert --from dbml --from-path schema.dbml \
   --to bun --to-path models.go --package models \
   --types stdlib
 
-# Explicitly select resolvespec types (same as omitting --types)
+# Select sqltypes package types (git.warky.dev/wdevs/relspecgo/pkg/sqltypes)
 relspec convert --from pgsql --from-conn "postgres://localhost/mydb" \
   --to bun --to-path models.go --package models \
-  --types resolvespec
+  --types sqltypes
 
 # Multi-file output (one file per table)
 relspec convert --from json --from-path schema.json \
   --to bun --to-path models/ --package models
+
+# Inject computed/scan-only fields that are not present in the database schema
+# (extra-fields.json contains the JSON array shown below)
+relspec convert --from dbml --from-path schema.dbml \
+  --to bun --to-path models.go --package models \
+  --extra-fields extra-fields.json
 ```
 
 ## Generated Code Examples
 
-### Default — resolvespec types (`--types resolvespec`)
+### sqltypes package types (`--types sqltypes`)
 
 ```go
 package models
 
 import (
-    resolvespec_common "github.com/bitechdev/ResolveSpec/pkg/spectypes"
+    sql_types "git.warky.dev/wdevs/relspecgo/pkg/sqltypes"
     "github.com/uptrace/bun"
 )
 
 type User struct {
     bun.BaseModel `bun:"table:users,alias:u"`
 
-    ID        int64                              `bun:"id,type:uuid,pk," json:"id"`
+    ID        int64                  `bun:"id,type:uuid,pk," json:"id"`
-    Username  string                             `bun:"username,type:text,notnull," json:"username"`
+    Username  string                 `bun:"username,type:text,notnull," json:"username"`
-    Email     resolvespec_common.SqlString       `bun:"email,type:text,nullzero," json:"email"`
+    Email     sql_types.SqlString    `bun:"email,type:text,nullzero," json:"email"`
-    Tags      resolvespec_common.SqlStringArray  `bun:"tags,type:text[],default:'{}',notnull," json:"tags"`
+    Tags      []string               `bun:"tags,type:text[],array,default:'{}',notnull," json:"tags"`
-    CreatedAt resolvespec_common.SqlTimeStamp    `bun:"created_at,type:timestamptz,default:now(),notnull," json:"created_at"`
+    CreatedAt sql_types.SqlTimeStamp `bun:"created_at,type:timestamptz,default:now(),notnull," json:"created_at"`
 }
 ```
 
@@ -105,7 +113,7 @@ type User struct {
     ID        string         `bun:"id,type:uuid,pk," json:"id"`
     Username  string         `bun:"username,type:text,notnull," json:"username"`
     Email     sql.NullString `bun:"email,type:text,nullzero," json:"email"`
-    Tags      []string       `bun:"tags,type:text[],default:'{}',notnull," json:"tags"`
+    Tags      []string       `bun:"tags,type:text[],array,default:'{}',notnull," json:"tags"`
     CreatedAt time.Time      `bun:"created_at,type:timestamptz,default:now(),notnull," json:"created_at"`
 }
 ```
@@ -126,7 +134,7 @@ type User struct {
 
 The nullable type package is selected with `--types` (or `WriterOptions.NullableTypes`).
 
-| SQL Type | NOT NULL (both) | Nullable — resolvespec | Nullable — stdlib |
+| SQL Type | NOT NULL (both) | Nullable — sqltypes | Nullable — stdlib |
 |---|---|---|---|
 | `bigint` | `int64` | `SqlInt64` | `sql.NullInt64` |
 | `integer` | `int32` | `SqlInt32` | `sql.NullInt32` |
@@ -137,12 +145,18 @@ The nullable type package is selected with `--types` (or `WriterOptions.Nullable
 | `numeric`, `decimal` | `float64` | `SqlFloat64` | `sql.NullFloat64` |
 | `uuid` | `string` | `SqlUUID` | `sql.NullString` |
 | `jsonb` | `string` | `SqlJSONB` | `sql.NullString` |
-| `text[]` | `SqlStringArray` | `SqlStringArray` | `[]string` |
+| `text[]` | `[]string`† | `[]string`† | `[]string`† |
-| `integer[]` | `SqlInt32Array` | `SqlInt32Array` | `[]int32` |
+| `integer[]` | `[]int32`† | `[]int32`† | `[]int32`† |
-| `uuid[]` | `SqlUUIDArray` | `SqlUUIDArray` | `[]string` |
+| `uuid[]` | `[]string`† | `[]string`† | `[]string`† |
 | `vector` | `SqlVector` | `SqlVector` | `[]float32` |
 
-\* In resolvespec mode, NOT NULL timestamps use `SqlTimeStamp` (not `time.Time`) unless the base type is a simple integer or boolean. In stdlib mode, NOT NULL timestamps use `time.Time`.
+† Array columns always use a plain native Go slice with an explicit `array`
+bun tag (`bun:"tags,type:text[],array,..."`), in every `--types` mode — the
+`SqlXxxArray` wrapper types are never used, since bun's pgdialect scans/appends
+native slices directly. Regardless of NOT NULL, unless `--array-nullable
+pointer_slice` is set — see [NullableArrays](#nullablearrays) below.
+
+\* In sqltypes mode, NOT NULL timestamps use `SqlTimeStamp` (not `time.Time`) unless the base type is a simple integer or boolean. In stdlib mode, NOT NULL timestamps use `time.Time`.
 
 ## Writer Options
 
@@ -151,11 +165,11 @@ The nullable type package is selected with `--types` (or `WriterOptions.Nullable
 Controls which Go package is used for nullable column types. Set via the `--types` CLI flag or `WriterOptions.NullableTypes`:
 
 ```go
-// Use resolvespec types (default — omit NullableTypes or set to "resolvespec")
+// Use sqltypes package types
 options := &writers.WriterOptions{
     OutputPath:    "models.go",
     PackageName:   "models",
-    NullableTypes: writers.NullableTypeResolveSpec,
+    NullableTypes: writers.NullableTypeSqlTypes,
 }
 
 // Use standard library database/sql types
@@ -166,6 +180,34 @@ options := &writers.WriterOptions{
 }
 ```
 
+### NullableArrays
+
+Controls how nullable PostgreSQL array columns are represented in stdlib/baselib
+`--types` mode (no effect in `sqltypes` mode, which always uses the `SqlXxxArray`
+wrapper types). Set via the `--array-nullable` CLI flag or `WriterOptions.NullableArrays`:
+
+```go
+// Default: every array column is a plain slice, e.g. []string.
+// SQL NULL and '{}' both scan into a nil/zero-length slice, so callers
+// cannot distinguish them.
+options := &writers.WriterOptions{
+    NullableArrays: writers.NullableArraysSlice,
+}
+
+// Nullable array columns become a pointer to a slice, e.g. *[]string.
+// A nil pointer means SQL NULL; a non-nil pointer to an empty slice
+// means '{}'. NOT NULL array columns are unaffected and stay plain slices.
+options := &writers.WriterOptions{
+    NullableArrays: writers.NullableArraysPointerSlice,
+}
+```
+
+```
+tags []string   `bun:"tags,type:text[],notnull,"`   // NOT NULL, either mode
+tags []string   `bun:"tags,type:text[],nullzero,"`   // nullable, default (slice)
+tags *[]string  `bun:"tags,type:text[],nullzero,"`   // nullable, pointer_slice
+```
+
 ### Metadata Options
 
 ```go
@@ -180,12 +222,67 @@ options := &writers.WriterOptions{
 }
 ```
 
+#### Extra fields
+
+Use `Metadata["extra_fields"]` (or the CLI `--extra-fields <path>` flag) to inject
+custom fields into generated Bun models without editing generated files. This is
+intended for computed columns and scan-only query fields that Bun must scan into
+but that are not real database table columns.
+
+The CLI flag expects a path to a JSON file, not inline JSON. This avoids shell
+quoting problems with struct tags and complex type names.
+
+Each entry supports:
+
+| Field | Required | Description |
+|---|---:|---|
+| `target_table` | No | Optional model scope. Accepts table name (`projects`), qualified table (`public.projects`), or model name (`ModelPublicProjects`). If omitted, the field is added to every generated model. |
+| `name` | Yes | Go struct field name. |
+| `type` | Yes | Go type to emit. |
+| `bun_tag` | No | Raw Bun tag contents, e.g. `thought_count,scanonly`. |
+| `json_tag` | No | Raw JSON tag contents. |
+| `comment` | No | Optional line comment. |
+
+```go
+options := &writers.WriterOptions{
+    OutputPath:  "models.go",
+    PackageName: "models",
+    Metadata: map[string]any{
+        "extra_fields": `[
+          {
+            "target_table": "projects",
+            "name": "ThoughtCount",
+            "type": "sql_types.SqlInt64",
+            "bun_tag": "thought_count,scanonly",
+            "json_tag": "thought_count",
+            "comment": "Computed by ResolveSpec queries"
+          }
+        ]`,
+    },
+}
+```
+
+Example `extra-fields.json`:
+
+```json
+[
+  {
+    "target_table": "projects",
+    "name": "ThoughtCount",
+    "type": "sql_types.SqlInt64",
+    "bun_tag": "thought_count,scanonly",
+    "json_tag": "thought_count",
+    "comment": "Computed by ResolveSpec queries"
+  }
+]
+```
+
 ## Notes
 
 - Model names are derived from table names (singularized, PascalCase)
 - Table aliases are auto-generated from table names
-- Nullable columns use `resolvespec_common.SqlString`, `resolvespec_common.SqlTimeStamp`, etc. by default; pass `--types stdlib` to use `sql.NullString`, `sql.NullTime`, etc. instead
+- Nullable columns use plain Go pointer types (`*string`, `*time.Time`, …) by default; pass `--types sqltypes` to use `sql_types.SqlString`, `sql_types.SqlTimeStamp`, etc., or `--types stdlib` to use `sql.NullString`, `sql.NullTime`, etc.
-- Array columns use `resolvespec_common.SqlStringArray`, `resolvespec_common.SqlInt32Array`, etc. by default; `--types stdlib` produces plain Go slices (`[]string`, `[]int32`, …)
+- Array columns always use plain Go slices (`[]string`, `[]int32`, …) with an explicit `array` bun tag, regardless of `--types`; pass `--array-nullable pointer_slice` to use `*[]string` etc. for nullable array columns.
 - Multi-file mode: one file per table named `sql_{schema}_{table}.go`
 - Generated code is auto-formatted
 - JSON tags are automatically added

pkg/writers/bun/array_integration_test.go

@@ -0,0 +1,141 @@
+package bun_test
+
+import (
+	"context"
+	"database/sql"
+	"os"
+	"testing"
+
+	_ "github.com/jackc/pgx/v5/stdlib"
+	"github.com/uptrace/bun"
+	"github.com/uptrace/bun/dialect/pgdialect"
+)
+
+// TestBunArrayColumns_NativeSlice verifies against a live PostgreSQL
+// database (issue #13) that RelSpec's generated Bun array tags round-trip
+// correctly through Bun's own pgdialect for both NOT NULL and nullable
+// columns: NULL, '{}', and populated arrays must all scan and insert
+// without a "bun: Scan(unsupported ...)" error.
+//
+// Requires the RELSPEC_TEST_PG_CONN environment variable, e.g.:
+//
+//	RELSPEC_TEST_PG_CONN="postgres://postgres:postgres@localhost:5432/relspec_test?sslmode=disable"
+func TestBunArrayColumns_NativeSlice(t *testing.T) {
+	connStr := os.Getenv("RELSPEC_TEST_PG_CONN")
+	if connStr == "" {
+		t.Skip("Skipping Bun array integration test: RELSPEC_TEST_PG_CONN environment variable not set")
+	}
+
+	sqldb, err := sql.Open("pgx", connStr)
+	if err != nil {
+		t.Fatalf("open connection: %v", err)
+	}
+	defer sqldb.Close()
+
+	db := bun.NewDB(sqldb, pgdialect.New())
+	ctx := context.Background()
+
+	type notNullArrayRow struct {
+		bun.BaseModel `bun:"table:relspec_test_arr_notnull"`
+		ID            int64    `bun:"id,pk,autoincrement"`
+		Tags          []string `bun:"tags,type:text[],notnull"`
+	}
+
+	type nullableArrayRow struct {
+		bun.BaseModel `bun:"table:relspec_test_arr_nullable"`
+		ID            int64     `bun:"id,pk,autoincrement"`
+		Tags          *[]string `bun:"tags,type:text[]"`
+	}
+
+	if _, err := db.NewDropTable().Model((*notNullArrayRow)(nil)).IfExists().Exec(ctx); err != nil {
+		t.Fatalf("drop table: %v", err)
+	}
+	if _, err := db.NewDropTable().Model((*nullableArrayRow)(nil)).IfExists().Exec(ctx); err != nil {
+		t.Fatalf("drop table: %v", err)
+	}
+	if _, err := db.NewCreateTable().Model((*notNullArrayRow)(nil)).Exec(ctx); err != nil {
+		t.Fatalf("create not-null table: %v", err)
+	}
+	if _, err := db.NewCreateTable().Model((*nullableArrayRow)(nil)).Exec(ctx); err != nil {
+		t.Fatalf("create nullable table: %v", err)
+	}
+	t.Cleanup(func() {
+		db.NewDropTable().Model((*notNullArrayRow)(nil)).IfExists().Exec(ctx)
+		db.NewDropTable().Model((*nullableArrayRow)(nil)).IfExists().Exec(ctx)
+	})
+
+	t.Run("not null populated array", func(t *testing.T) {
+		row := &notNullArrayRow{Tags: []string{"a", "b", "c"}}
+		if _, err := db.NewInsert().Model(row).Exec(ctx); err != nil {
+			t.Fatalf("insert: %v", err)
+		}
+		var out notNullArrayRow
+		if err := db.NewSelect().Model(&out).Where("id = ?", row.ID).Scan(ctx); err != nil {
+			t.Fatalf("select: %v", err)
+		}
+		if len(out.Tags) != 3 || out.Tags[0] != "a" || out.Tags[2] != "c" {
+			t.Errorf("Tags = %v, want [a b c]", out.Tags)
+		}
+	})
+
+	t.Run("not null empty array", func(t *testing.T) {
+		row := &notNullArrayRow{Tags: []string{}}
+		if _, err := db.NewInsert().Model(row).Exec(ctx); err != nil {
+			t.Fatalf("insert: %v", err)
+		}
+		var out notNullArrayRow
+		if err := db.NewSelect().Model(&out).Where("id = ?", row.ID).Scan(ctx); err != nil {
+			t.Fatalf("select: %v", err)
+		}
+		if len(out.Tags) != 0 {
+			t.Errorf("Tags = %v, want empty", out.Tags)
+		}
+	})
+
+	t.Run("nullable NULL", func(t *testing.T) {
+		row := &nullableArrayRow{Tags: nil}
+		if _, err := db.NewInsert().Model(row).Exec(ctx); err != nil {
+			t.Fatalf("insert: %v", err)
+		}
+		var out nullableArrayRow
+		if err := db.NewSelect().Model(&out).Where("id = ?", row.ID).Scan(ctx); err != nil {
+			t.Fatalf("select: %v", err)
+		}
+		if out.Tags != nil {
+			t.Errorf("Tags = %v, want nil (SQL NULL)", *out.Tags)
+		}
+	})
+
+	t.Run("nullable empty array", func(t *testing.T) {
+		empty := []string{}
+		row := &nullableArrayRow{Tags: &empty}
+		if _, err := db.NewInsert().Model(row).Exec(ctx); err != nil {
+			t.Fatalf("insert: %v", err)
+		}
+		var out nullableArrayRow
+		if err := db.NewSelect().Model(&out).Where("id = ?", row.ID).Scan(ctx); err != nil {
+			t.Fatalf("select: %v", err)
+		}
+		if out.Tags == nil {
+			t.Fatalf("Tags = nil, want non-nil pointer to empty slice")
+		}
+		if len(*out.Tags) != 0 {
+			t.Errorf("Tags = %v, want empty slice", *out.Tags)
+		}
+	})
+
+	t.Run("nullable populated array", func(t *testing.T) {
+		tags := []string{"x", "y"}
+		row := &nullableArrayRow{Tags: &tags}
+		if _, err := db.NewInsert().Model(row).Exec(ctx); err != nil {
+			t.Fatalf("insert: %v", err)
+		}
+		var out nullableArrayRow
+		if err := db.NewSelect().Model(&out).Where("id = ?", row.ID).Scan(ctx); err != nil {
+			t.Fatalf("select: %v", err)
+		}
+		if out.Tags == nil || len(*out.Tags) != 2 || (*out.Tags)[0] != "x" {
+			t.Errorf("Tags = %v, want [x y]", out.Tags)
+		}
+	})
+}

pkg/writers/bun/template_data.go

@@ -1,6 +1,8 @@
 package bun
 
 import (
+	"encoding/json"
+	"fmt"
 	"sort"
 	"strings"
 
@@ -32,6 +34,90 @@ type ModelData struct {
 	PrimaryKeyIDType string // Helper method GetID/SetID/UpdateID type
 	IDColumnName     string // Name of the ID column in database
 	Prefix           string // 3-letter prefix
+
+	// ExtraFields are user-defined fields added via generator config (issue #4)
+	ExtraFields []*FieldData `json:"extra_fields,omitempty"`
+}
+
+// ExtraFieldConfig represents a custom field to be added to generated models
+type ExtraFieldConfig struct {
+	Name        string `json:"name"`
+	Type        string `json:"type"`
+	BunTag      string `json:"bun_tag,omitempty"`
+	JSONTag     string `json:"json_tag,omitempty"`
+	Comment     string `json:"comment,omitempty"`
+	TargetTable string `json:"target_table,omitempty"` // optional: if set, field only applies to this table
+}
+
+// LoadExtraFieldsFromMetadata loads custom field configurations from metadata map.
+// Accepts either a JSON-encoded array of fields (for CLI use) or a structured list
+// (for programmatic/sidecar file use). Each entry must have "name" and "type";
+// an optional "target_table" scopes the field to one table only.
+func LoadExtraFieldsFromMetadata(metadata map[string]interface{}) []ExtraFieldConfig {
+	if metadata == nil {
+		return nil
+	}
+
+	extraFieldsRaw, ok := metadata["extra_fields"]
+	if !ok || extraFieldsRaw == nil {
+		return nil
+	}
+
+	// Try to parse as JSON string first (from CLI flag)
+	if strVal, ok := extraFieldsRaw.(string); ok {
+		var fields []ExtraFieldConfig
+		if err := json.Unmarshal([]byte(strVal), &fields); err == nil && len(fields) > 0 {
+			return filterValidFields(fields)
+		}
+	}
+
+	// Try to parse as structured data (from sidecar file or programmatic API)
+	extraFieldsList, ok := extraFieldsRaw.([]interface{})
+	if !ok || len(extraFieldsList) == 0 {
+		return nil
+	}
+
+	fields := make([]ExtraFieldConfig, 0, len(extraFieldsList))
+	for _, item := range extraFieldsList {
+		if fieldMap, ok := item.(map[string]interface{}); ok {
+			field := ExtraFieldConfig{
+				Name:        toString(fieldMap["name"]),
+				Type:        toString(fieldMap["type"]),
+				BunTag:      toString(fieldMap["bun_tag"]),
+				JSONTag:     toString(fieldMap["json_tag"]),
+				Comment:     toString(fieldMap["comment"]),
+				TargetTable: toString(fieldMap["target_table"]),
+			}
+			if field.Name != "" && field.Type != "" {
+				fields = append(fields, field)
+			}
+		}
+	}
+
+	return filterValidFields(fields)
+}
+
+// filterValidFields removes entries that are missing required fields.
+func filterValidFields(fields []ExtraFieldConfig) []ExtraFieldConfig {
+	var valid []ExtraFieldConfig
+	for _, f := range fields {
+		if f.Name != "" && f.Type != "" {
+			valid = append(valid, f)
+		}
+	}
+	return valid
+}
+
+func toString(v interface{}) string {
+	if v == nil {
+		return ""
+	}
+	switch val := v.(type) {
+	case string:
+		return val
+	default:
+		return fmt.Sprintf("%v", val)
+	}
 }
 
 // FieldData represents a single field in a struct
@@ -134,17 +220,20 @@ func NewModelData(table *models.Table, schema string, typeMapper *TypeMapper, fl
 		Prefix:        GeneratePrefix(table.Name),
 	}
 
+	// Convert columns to fields (sorted by sequence or name)
+	columns := sortColumns(table.Columns)
+
 	// Find primary key
-	for _, col := range table.Columns {
+	for _, col := range columns {
 		if col.IsPrimaryKey {
 			// Sanitize column name to remove backticks
 			safeName := writers.SanitizeStructTagValue(col.Name)
 			model.PrimaryKeyField = SnakeCaseToPascalCase(safeName)
 			model.IDColumnName = safeName
-			// Check if PK type is a SQL type (contains resolvespec_common or sql_types)
+			// Check if PK type is a SQL type (contains sql_types)
 			goType := typeMapper.SQLTypeToGoType(col.Type, col.NotNull)
 			model.PrimaryKeyType = goType
-			model.PrimaryKeyIsSQL = strings.Contains(goType, "resolvespec_common") || strings.Contains(goType, "sql_types")
+			model.PrimaryKeyIsSQL = strings.Contains(goType, "sql_types")
 			model.PrimaryKeyIsStr = isStringLikePrimaryKeyType(goType)
 			model.PrimaryKeyIDType = "int64"
 			if model.PrimaryKeyIsStr {
@@ -154,8 +243,6 @@ func NewModelData(table *models.Table, schema string, typeMapper *TypeMapper, fl
 		}
 	}
 
-	// Convert columns to fields (sorted by sequence or name)
-	columns := sortColumns(table.Columns)
 	for _, col := range columns {
 		field := columnToField(col, table, typeMapper)
 		// Check for name collision with generated methods and rename if needed
@@ -203,7 +290,7 @@ func formatComment(description, comment string) string {
 
 func isStringLikePrimaryKeyType(goType string) bool {
 	switch goType {
-	case "string", "sql.NullString", "resolvespec_common.SqlString", "resolvespec_common.SqlUUID":
+	case "string", "sql.NullString", "sql_types.SqlString", "sql_types.SqlUUID":
 		return true
 	default:
 		return false
@@ -249,6 +336,21 @@ func sortConstraints(constraints map[string]*models.Constraint) []*models.Constr
 	return result
 }
 
+// sortIndexes sorts indexes by sequence, then by name
+func sortIndexes(indexes map[string]*models.Index) []*models.Index {
+	result := make([]*models.Index, 0, len(indexes))
+	for _, idx := range indexes {
+		result = append(result, idx)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
 // sortColumns sorts columns by sequence, then by name
 func sortColumns(columns map[string]*models.Column) []*models.Column {
 	result := make([]*models.Column, 0, len(columns))

pkg/writers/bun/templates.go

@@ -23,6 +23,13 @@ type {{.Name}} struct {
 {{- range .Fields}}
 	{{.Name}} {{.Type}} ` + "`bun:\"{{.BunTag}}\" json:\"{{.JSONTag}}\"`" + `{{if .Comment}} // {{.Comment}}{{end}}
 {{- end}}
+{{- if .ExtraFields}}
+
+	// --- Custom fields (managed by relspecgo generator config, issue #4) ---
+{{- range .ExtraFields}}
+	{{.Name}} {{.Type}} ` + "`bun:\"{{.BunTag}}\" json:\"{{.JSONTag}}\"`" + `{{if .Comment}} // {{.Comment}}{{end}}
+{{- end}}
+{{- end}}
 }
 {{if .Config.GenerateTableName}}
 // TableName returns the table name for {{.Name}}

pkg/writers/bun/type_mapper.go

@@ -12,39 +12,56 @@ import (
 // TypeMapper handles type conversions between SQL and Go types for Bun
 type TypeMapper struct {
 	sqlTypesAlias string
-	typeStyle     string // writers.NullableTypeResolveSpec | writers.NullableTypeStdlib
+	typeStyle     string // writers.NullableTypeSqlTypes | writers.NullableTypeStdlib | writers.NullableTypeBaselib
+	arrayNullable string // writers.NullableArraysSlice | writers.NullableArraysPointerSlice
 }
 
 // NewTypeMapper creates a new TypeMapper.
-// typeStyle should be writers.NullableTypeResolveSpec or writers.NullableTypeStdlib;
+// typeStyle should be writers.NullableTypeSqlTypes, writers.NullableTypeStdlib, or
-// an empty string defaults to resolvespec.
+// writers.NullableTypeBaselib; an empty string defaults to baselib.
-func NewTypeMapper(typeStyle string) *TypeMapper {
+// arrayNullable should be writers.NullableArraysSlice or
+// writers.NullableArraysPointerSlice; an empty string defaults to slice.
+func NewTypeMapper(typeStyle, arrayNullable string) *TypeMapper {
 	if typeStyle == "" {
-		typeStyle = writers.NullableTypeResolveSpec
+		typeStyle = writers.NullableTypeBaselib
+	}
+	if arrayNullable == "" {
+		arrayNullable = writers.NullableArraysSlice
 	}
 	return &TypeMapper{
-		sqlTypesAlias: "resolvespec_common",
+		sqlTypesAlias: "sql_types",
 		typeStyle:     typeStyle,
+		arrayNullable: arrayNullable,
 	}
 }
 
 // SQLTypeToGoType converts a SQL type to its Go equivalent.
 func (tm *TypeMapper) SQLTypeToGoType(sqlType string, notNull bool) string {
-	// Array types are handled separately for both styles.
+	// Array columns always use a native Go slice, regardless of typeStyle.
 	if pgsql.IsArrayType(sqlType) {
-		return tm.arrayGoType(tm.extractBaseType(sqlType))
+		goType := tm.arrayGoType(tm.extractBaseType(sqlType))
+		if !notNull && tm.arrayNullable == writers.NullableArraysPointerSlice {
+			goType = "*" + goType
+		}
+		return goType
 	}
 
 	baseType := tm.extractBaseType(sqlType)
 
-	if tm.typeStyle == writers.NullableTypeStdlib {
+	switch tm.typeStyle {
+	case writers.NullableTypeStdlib:
 		if notNull {
 			return tm.rawGoType(baseType)
 		}
 		return tm.stdlibNullableGoType(baseType)
+	case writers.NullableTypeBaselib:
+		if notNull {
+			return tm.rawGoType(baseType)
+		}
+		return tm.baselibNullableGoType(baseType)
 	}
 
-	// resolvespec (default): use base Go types only for simple NOT NULL fields.
+	// sqltypes: use base Go types only for simple NOT NULL fields.
 	if notNull && tm.isSimpleType(baseType) {
 		return tm.baseGoType(baseType)
 	}
@@ -100,11 +117,11 @@ func (tm *TypeMapper) baseGoType(sqlType string) string {
 		return goType
 	}
 
-	// Default to resolvespec type
+	// Default to sqltypes type
 	return tm.bunGoType(sqlType)
 }
 
-// bunGoType returns the Bun/ResolveSpec common type
+// bunGoType returns the Bun/sqltypes common type
 func (tm *TypeMapper) bunGoType(sqlType string) string {
 	typeMap := map[string]string{
 		// Integer types
@@ -182,34 +199,13 @@ func (tm *TypeMapper) bunGoType(sqlType string) string {
 
 // arrayGoType returns the Go type for a PostgreSQL array column.
 // The baseElemType is the canonical base type (e.g. "text", "integer").
+//
+// Array columns always use a plain native Go slice, even in sqltypes mode:
+// bun's pgdialect scans native slices directly, and the SqlXxxArray wrapper
+// types are not usable as array columns (their Scan/Append are bypassed
+// whenever the "array" bun tag is set, which is required for arrays).
 func (tm *TypeMapper) arrayGoType(baseElemType string) string {
-	if tm.typeStyle == writers.NullableTypeStdlib {
+	return tm.stdlibArrayGoType(baseElemType)
-		return tm.stdlibArrayGoType(baseElemType)
-	}
-	typeMap := map[string]string{
-		"text": tm.sqlTypesAlias + ".SqlStringArray", "varchar": tm.sqlTypesAlias + ".SqlStringArray",
-		"char": tm.sqlTypesAlias + ".SqlStringArray", "character": tm.sqlTypesAlias + ".SqlStringArray",
-		"citext": tm.sqlTypesAlias + ".SqlStringArray", "bpchar": tm.sqlTypesAlias + ".SqlStringArray",
-		"inet": tm.sqlTypesAlias + ".SqlStringArray", "cidr": tm.sqlTypesAlias + ".SqlStringArray",
-		"macaddr": tm.sqlTypesAlias + ".SqlStringArray",
-		"json":    tm.sqlTypesAlias + ".SqlStringArray", "jsonb": tm.sqlTypesAlias + ".SqlStringArray",
-		"integer": tm.sqlTypesAlias + ".SqlInt32Array", "int": tm.sqlTypesAlias + ".SqlInt32Array",
-		"int4": tm.sqlTypesAlias + ".SqlInt32Array", "serial": tm.sqlTypesAlias + ".SqlInt32Array",
-		"smallint": tm.sqlTypesAlias + ".SqlInt16Array", "int2": tm.sqlTypesAlias + ".SqlInt16Array",
-		"smallserial": tm.sqlTypesAlias + ".SqlInt16Array",
-		"bigint":      tm.sqlTypesAlias + ".SqlInt64Array", "int8": tm.sqlTypesAlias + ".SqlInt64Array",
-		"bigserial": tm.sqlTypesAlias + ".SqlInt64Array",
-		"real":      tm.sqlTypesAlias + ".SqlFloat32Array", "float4": tm.sqlTypesAlias + ".SqlFloat32Array",
-		"double precision": tm.sqlTypesAlias + ".SqlFloat64Array", "float8": tm.sqlTypesAlias + ".SqlFloat64Array",
-		"numeric": tm.sqlTypesAlias + ".SqlFloat64Array", "decimal": tm.sqlTypesAlias + ".SqlFloat64Array",
-		"money":   tm.sqlTypesAlias + ".SqlFloat64Array",
-		"boolean": tm.sqlTypesAlias + ".SqlBoolArray", "bool": tm.sqlTypesAlias + ".SqlBoolArray",
-		"uuid": tm.sqlTypesAlias + ".SqlUUIDArray",
-	}
-	if goType, ok := typeMap[baseElemType]; ok {
-		return goType
-	}
-	return tm.sqlTypesAlias + ".SqlStringArray"
 }
 
 // rawGoType returns the plain Go type for a NOT NULL column in stdlib mode.
@@ -276,6 +272,38 @@ func (tm *TypeMapper) stdlibNullableGoType(sqlType string) string {
 	return "sql.NullString"
 }
 
+// baselibNullableGoType returns plain Go pointer types for nullable columns.
+func (tm *TypeMapper) baselibNullableGoType(sqlType string) string {
+	typeMap := map[string]string{
+		"integer": "*int32", "int": "*int32", "int4": "*int32", "serial": "*int32",
+		"smallint": "*int16", "int2": "*int16", "smallserial": "*int16",
+		"bigint": "*int64", "int8": "*int64", "bigserial": "*int64",
+		"boolean": "*bool", "bool": "*bool",
+		"real": "*float32", "float4": "*float32",
+		"double precision": "*float64", "float8": "*float64",
+		"numeric": "*float64", "decimal": "*float64", "money": "*float64",
+		"text": "*string", "varchar": "*string", "char": "*string",
+		"character": "*string", "citext": "*string", "bpchar": "*string",
+		"inet": "*string", "cidr": "*string", "macaddr": "*string",
+		"uuid": "*string", "json": "*string", "jsonb": "*string",
+		"timestamp":                   "*time.Time",
+		"timestamp without time zone": "*time.Time",
+		"timestamp with time zone":    "*time.Time",
+		"timestamptz":                 "*time.Time",
+		"date":                        "*time.Time",
+		"time":                        "*time.Time",
+		"time without time zone":      "*time.Time",
+		"time with time zone":         "*time.Time",
+		"timetz":                      "*time.Time",
+		"bytea":                       "[]byte",
+		"vector":                      "[]float32",
+	}
+	if goType, ok := typeMap[sqlType]; ok {
+		return goType
+	}
+	return "*string"
+}
+
 // stdlibArrayGoType returns a plain Go slice type for array columns in stdlib mode.
 func (tm *TypeMapper) stdlibArrayGoType(baseElemType string) string {
 	typeMap := map[string]string{
@@ -323,7 +351,7 @@ func (tm *TypeMapper) BuildBunTag(column *models.Column, table *models.Table) st
 			}
 		}
 		parts = append(parts, fmt.Sprintf("type:%s", typeStr))
-		if isArray && tm.typeStyle == writers.NullableTypeStdlib {
+		if isArray {
 			parts = append(parts, "array")
 		}
 	}
@@ -355,7 +383,7 @@ func (tm *TypeMapper) BuildBunTag(column *models.Column, table *models.Table) st
 
 	// Check for indexes (unique indexes should be added to tag)
 	if table != nil {
-		for _, index := range table.Indexes {
+		for _, index := range sortIndexes(table.Indexes) {
 			if !index.Unique {
 				continue
 			}
@@ -423,16 +451,19 @@ func (tm *TypeMapper) NeedsFmtImport(generateGetIDStr bool) bool {
 	return generateGetIDStr
 }
 
-// GetSQLTypesImport returns the import path for the ResolveSpec spectypes package.
+// GetSQLTypesImport returns the import path for the sqltypes package.
 func (tm *TypeMapper) GetSQLTypesImport() string {
-	return "github.com/bitechdev/ResolveSpec/pkg/spectypes"
+	return "git.warky.dev/wdevs/relspecgo/pkg/sqltypes"
 }
 
 // GetNullableTypeImportLine returns the full Go import line for the nullable type
 // package (ready to pass to AddImport). Returns empty string when no import is needed.
 func (tm *TypeMapper) GetNullableTypeImportLine() string {
-	if tm.typeStyle == writers.NullableTypeStdlib {
+	switch tm.typeStyle {
+	case writers.NullableTypeStdlib:
 		return "\"database/sql\""
+	case writers.NullableTypeBaselib:
+		return ""
 	}
 	return fmt.Sprintf("%s \"%s\"", tm.sqlTypesAlias, tm.GetSQLTypesImport())
 }

pkg/writers/bun/writer.go

@@ -24,7 +24,7 @@ type Writer struct {
 func NewWriter(options *writers.WriterOptions) *Writer {
 	w := &Writer{
 		options:    options,
-		typeMapper: NewTypeMapper(options.NullableTypes),
+		typeMapper: NewTypeMapper(options.NullableTypes, options.NullableArrays),
 		config:     LoadMethodConfigFromMetadata(options.Metadata),
 	}
 
@@ -51,6 +51,43 @@ func (w *Writer) WriteDatabase(db *models.Database) error {
 	return w.writeSingleFile(db)
 }
 
+// addExtraFields appends user-defined extra fields to matching models.
+// Fields may be scoped by target_table (table name, schema.table name, or model name).
+// Unscoped fields apply to every generated model.
+func (w *Writer) addExtraFields(templateData *TemplateData) {
+	extraFields := LoadExtraFieldsFromMetadata(w.options.Metadata)
+	if len(extraFields) == 0 {
+		return
+	}
+
+	for _, model := range templateData.Models {
+		for _, ef := range extraFields {
+			if !extraFieldMatchesModel(ef, model) {
+				continue
+			}
+
+			fieldData := &FieldData{
+				Name:    resolveFieldNameCollision(ef.Name),
+				Type:    ef.Type,
+				BunTag:  ef.BunTag,
+				JSONTag: ef.JSONTag,
+				Comment: ef.Comment,
+			}
+			model.ExtraFields = append(model.ExtraFields, fieldData)
+		}
+	}
+}
+
+func extraFieldMatchesModel(field ExtraFieldConfig, model *ModelData) bool {
+	if field.TargetTable == "" {
+		return true
+	}
+
+	return field.TargetTable == model.TableNameOnly ||
+		field.TargetTable == model.TableName ||
+		field.TargetTable == model.Name
+}
+
 // WriteSchema writes a schema as Bun models
 func (w *Writer) WriteSchema(schema *models.Schema) error {
 	// Create a temporary database with just this schema
@@ -80,7 +117,7 @@ func (w *Writer) writeSingleFile(db *models.Database) error {
 	// Add bun import (always needed)
 	templateData.AddImport(fmt.Sprintf("\"%s\"", w.typeMapper.GetBunImport()))
 
-	// Add nullable types import (resolvespec or stdlib depending on options)
+	// Add nullable types import (sqltypes or stdlib depending on options)
 	templateData.AddImport(w.typeMapper.GetNullableTypeImportLine())
 
 	// Collect all models
@@ -107,6 +144,9 @@ func (w *Writer) writeSingleFile(db *models.Database) error {
 		templateData.AddImport("\"fmt\"")
 	}
 
+	// Apply extra fields from generator config (issue #4)
+	w.addExtraFields(templateData)
+
 	// Finalize imports
 	templateData.FinalizeImports()
 
@@ -177,7 +217,7 @@ func (w *Writer) writeMultiFile(db *models.Database) error {
 			// Add bun import
 			templateData.AddImport(fmt.Sprintf("\"%s\"", w.typeMapper.GetBunImport()))
 
-			// Add nullable types import (resolvespec or stdlib depending on options)
+			// Add nullable types import (sqltypes or stdlib depending on options)
 			templateData.AddImport(w.typeMapper.GetNullableTypeImportLine())
 
 			// Create model data
@@ -200,6 +240,9 @@ func (w *Writer) writeMultiFile(db *models.Database) error {
 				templateData.AddImport("\"fmt\"")
 			}
 
+			// Apply extra fields from generator config (issue #4)
+			w.addExtraFields(templateData)
+
 			// Finalize imports
 			templateData.FinalizeImports()
 

pkg/writers/bun/writer_test.go

@@ -73,9 +73,9 @@ func TestWriter_WriteTable(t *testing.T) {
 		"ID",
 		"int64",
 		"Email",
-		"resolvespec_common.SqlString",
+		"*string",
 		"CreatedAt",
-		"resolvespec_common.SqlTime",
+		"time.Time",
 		"bun:\"id",
 		"bun:\"email",
 		"func (m ModelPublicUsers) TableName() string",
@@ -550,13 +550,13 @@ func TestWriter_FieldNameCollision(t *testing.T) {
 	}
 
 	// Verify NO field named just "TableName" (without underscore)
-	if strings.Contains(generated, "TableName resolvespec_common") || strings.Contains(generated, "TableName string") {
+	if strings.Contains(generated, "TableName sql_types") || strings.Contains(generated, "TableName string") {
 		t.Errorf("Field 'TableName' without underscore should not exist (would conflict with method)\nGenerated:\n%s", generated)
 	}
 }
 
 func TestTypeMapper_SQLTypeToGoType_Bun(t *testing.T) {
-	mapper := NewTypeMapper("")
+	mapper := NewTypeMapper("", "")
 
 	tests := []struct {
 		sqlType string
@@ -564,20 +564,20 @@ func TestTypeMapper_SQLTypeToGoType_Bun(t *testing.T) {
 		want    string
 	}{
 		{"bigint", true, "int64"},
-		{"bigint", false, "resolvespec_common.SqlInt64"},
+		{"bigint", false, "*int64"},
-		{"varchar", true, "resolvespec_common.SqlString"}, // Bun uses sql types even for NOT NULL strings
+		{"varchar", true, "string"},
-		{"varchar", false, "resolvespec_common.SqlString"},
+		{"varchar", false, "*string"},
-		{"timestamp", true, "resolvespec_common.SqlTimeStamp"},
+		{"timestamp", true, "time.Time"},
-		{"timestamp", false, "resolvespec_common.SqlTimeStamp"},
+		{"timestamp", false, "*time.Time"},
-		{"date", false, "resolvespec_common.SqlDate"},
+		{"date", false, "*time.Time"},
 		{"boolean", true, "bool"},
-		{"boolean", false, "resolvespec_common.SqlBool"},
+		{"boolean", false, "*bool"},
-		{"uuid", false, "resolvespec_common.SqlUUID"},
+		{"uuid", false, "*string"},
-		{"jsonb", false, "resolvespec_common.SqlJSONB"},
+		{"jsonb", false, "*string"},
-		{"text[]", true, "resolvespec_common.SqlStringArray"},
+		{"text[]", true, "[]string"},
-		{"text[]", false, "resolvespec_common.SqlStringArray"},
+		{"text[]", false, "[]string"},
-		{"integer[]", true, "resolvespec_common.SqlInt32Array"},
+		{"integer[]", true, "[]int32"},
-		{"bigint[]", false, "resolvespec_common.SqlInt64Array"},
+		{"bigint[]", false, "[]int64"},
 	}
 
 	for _, tt := range tests {
@@ -599,7 +599,7 @@ func TestWriter_UpdateIDTypeSafety_Bun(t *testing.T) {
 		forbidInt32  bool
 	}{
 		{"int32_pk", "int", "int32", "m.ID = int32(newid)", false},
-		{"sql_int16_pk", "smallint", "resolvespec_common.SqlInt16", "m.ID.FromString(fmt.Sprintf(\"%d\", newid))", true},
+		{"sql_int16_pk", "smallint", "int16", "m.ID = int16(newid)", true},
 		{"int64_pk", "bigint", "int64", "m.ID = int64(newid)", true},
 	}
 
@@ -680,13 +680,13 @@ func TestWriter_StringPrimaryKeyHelpers_Bun(t *testing.T) {
 	generated := string(content)
 
 	expectations := []string{
-		"resolvespec_common.SqlUUID",
+		"ID            string",
 		"func (m ModelPublicAccounts) GetID() string",
-		"return m.ID.String()",
+		"return m.ID",
 		"func (m ModelPublicAccounts) GetIDStr() string",
 		"func (m ModelPublicAccounts) SetID(newid string)",
 		"func (m *ModelPublicAccounts) UpdateID(newid string)",
-		"m.ID.FromString(newid)",
+		"m.ID = newid",
 	}
 
 	for _, expected := range expectations {
@@ -701,7 +701,7 @@ func TestWriter_StringPrimaryKeyHelpers_Bun(t *testing.T) {
 }
 
 func TestTypeMapper_BuildBunTag(t *testing.T) {
-	mapper := NewTypeMapper("")
+	mapper := NewTypeMapper("", "")
 
 	tests := []struct {
 		name   string
@@ -827,36 +827,282 @@ func TestTypeMapper_BuildBunTag(t *testing.T) {
 					t.Errorf("BuildBunTag() = %q, missing %q", result, part)
 				}
 			}
-			// resolvespec mode must NOT add "array" — SqlXxxArray uses sql.Scanner
+			// Array columns always carry the "array" tag, telling bun's
-			if strings.Contains(result, ",array,") || strings.HasSuffix(result, ",array,") {
+			// pgdialect to scan/append the native Go slice as a PostgreSQL array.
-				t.Errorf("BuildBunTag() = %q, must not contain 'array' in resolvespec mode", result)
+			if strings.HasSuffix(tt.column.Type, "[]") && !strings.Contains(result, ",array,") {
+				t.Errorf("BuildBunTag() = %q, expected 'array' tag", result)
 			}
 		})
 	}
 }
 
-func TestTypeMapper_BuildBunTag_StdlibArrayHasArrayTag(t *testing.T) {
+// TestTypeMapper_BuildBunTag_MultipleUniqueIndexesDeterministic verifies that
-	mapper := NewTypeMapper(writers.NullableTypeStdlib)
+// when a column belongs to more than one unique index, the "unique:" tag
-
+// fragments always appear in the same order across repeated calls, instead
-	cases := []struct {
+// of following Go's randomized map iteration order over Table.Indexes.
-		name   string
+func TestTypeMapper_BuildBunTag_MultipleUniqueIndexesDeterministic(t *testing.T) {
-		column *models.Column
+	mapper := NewTypeMapper("", "")
-	}{
+	table := &models.Table{
-		{name: "text array", column: &models.Column{Name: "tags", Type: "text[]"}},
+		Name: "accounts",
-		{name: "integer array", column: &models.Column{Name: "scores", Type: "integer[]", NotNull: true}},
+		Indexes: map[string]*models.Index{
+			"idx_z_accounts_email_tenant": {
+				Name:    "idx_z_accounts_email_tenant",
+				Columns: []string{"email", "tenant_id"},
+				Unique:  true,
+			},
+			"idx_a_accounts_email_region": {
+				Name:    "idx_a_accounts_email_region",
+				Columns: []string{"email", "region_id"},
+				Unique:  true,
+			},
+		},
 	}
-	for _, tt := range cases {
+	column := &models.Column{Name: "email", Type: "varchar", Length: 255, NotNull: true}
-		t.Run(tt.name, func(t *testing.T) {
+
-			result := mapper.BuildBunTag(tt.column, nil)
+	first := mapper.BuildBunTag(column, table)
-			if !strings.Contains(result, "array") {
+	for i := 0; i < 50; i++ {
-				t.Errorf("BuildBunTag() = %q, expected 'array' in stdlib mode", result)
+		got := mapper.BuildBunTag(column, table)
+		if got != first {
+			t.Fatalf("BuildBunTag() is non-deterministic across calls: %q vs %q", first, got)
+		}
+	}
+
+	wantOrder := "unique:idx_a_accounts_email_region,unique:idx_z_accounts_email_tenant,"
+	if !strings.Contains(first, wantOrder) {
+		t.Errorf("BuildBunTag() = %q, want unique tags sorted by index name: %q", first, wantOrder)
+	}
+}
+
+// TestTypeMapper_BuildBunTag_ArraysAreNativeInEveryMode verifies that array
+// columns always use a plain "text[]"-style type and the native Go slice
+// type plus an explicit "array" tag, regardless of NullableTypes style
+// (sqltypes/stdlib/baselib). bun's pgdialect scans/appends native slices
+// directly; the SqlXxxArray wrapper types are never used for array columns.
+func TestTypeMapper_BuildBunTag_ArraysAreNativeInEveryMode(t *testing.T) {
+	for _, style := range []string{writers.NullableTypeSqlTypes, writers.NullableTypeStdlib, writers.NullableTypeBaselib} {
+		t.Run(style, func(t *testing.T) {
+			mapper := NewTypeMapper(style, "")
+
+			cases := []struct {
+				name       string
+				column     *models.Column
+				wantSubstr string
+			}{
+				{name: "text array", column: &models.Column{Name: "tags", Type: "text[]"}, wantSubstr: "type:text[],array,"},
+				{name: "varchar array", column: &models.Column{Name: "labels", Type: "varchar[]"}, wantSubstr: "type:varchar[],array,"},
+				{name: "integer array", column: &models.Column{Name: "scores", Type: "integer[]", NotNull: true}, wantSubstr: "type:integer[],array,"},
+				{name: "boolean array", column: &models.Column{Name: "flags", Type: "boolean[]"}, wantSubstr: "type:boolean[],array,"},
+				{name: "uuid array", column: &models.Column{Name: "ids", Type: "uuid[]"}, wantSubstr: "type:uuid[],array,"},
+			}
+			for _, tt := range cases {
+				t.Run(tt.name, func(t *testing.T) {
+					result := mapper.BuildBunTag(tt.column, nil)
+					if !strings.Contains(result, tt.wantSubstr) {
+						t.Errorf("BuildBunTag() = %q, missing %q", result, tt.wantSubstr)
+					}
+					goType := mapper.SQLTypeToGoType(tt.column.Type, tt.column.NotNull)
+					if strings.Contains(goType, "sql_types") {
+						t.Errorf("SQLTypeToGoType() = %q, array columns must use a native Go slice, not an sql_types wrapper", goType)
+					}
+				})
 			}
 		})
 	}
 }
 
+// TestTypeMapper_SQLTypeToGoType_ArrayNullable verifies that nullable array
+// columns become a pointer-to-slice when NullableArrays is
+// "pointer_slice", so callers can distinguish SQL NULL (nil pointer) from
+// '{}' (pointer to an empty slice); NOT NULL columns are unaffected.
+func TestTypeMapper_SQLTypeToGoType_ArrayNullable(t *testing.T) {
+	cases := []struct {
+		name          string
+		typeStyle     string
+		arrayNullable string
+		sqlType       string
+		notNull       bool
+		want          string
+	}{
+		{name: "baselib nullable slice (default)", typeStyle: writers.NullableTypeBaselib, arrayNullable: "", sqlType: "text[]", notNull: false, want: "[]string"},
+		{name: "baselib nullable pointer_slice", typeStyle: writers.NullableTypeBaselib, arrayNullable: writers.NullableArraysPointerSlice, sqlType: "text[]", notNull: false, want: "*[]string"},
+		{name: "baselib not null pointer_slice unaffected", typeStyle: writers.NullableTypeBaselib, arrayNullable: writers.NullableArraysPointerSlice, sqlType: "text[]", notNull: true, want: "[]string"},
+		{name: "stdlib nullable pointer_slice", typeStyle: writers.NullableTypeStdlib, arrayNullable: writers.NullableArraysPointerSlice, sqlType: "integer[]", notNull: false, want: "*[]int32"},
+		{name: "sqltypes nullable pointer_slice (arrays are always native)", typeStyle: writers.NullableTypeSqlTypes, arrayNullable: writers.NullableArraysPointerSlice, sqlType: "text[]", notNull: false, want: "*[]string"},
+	}
+
+	for _, tt := range cases {
+		t.Run(tt.name, func(t *testing.T) {
+			mapper := NewTypeMapper(tt.typeStyle, tt.arrayNullable)
+			got := mapper.SQLTypeToGoType(tt.sqlType, tt.notNull)
+			if got != tt.want {
+				t.Errorf("SQLTypeToGoType(%q, %v) = %q, want %q", tt.sqlType, tt.notNull, got, tt.want)
+			}
+		})
+	}
+}
+
+func TestExtraFields_LoadFromMetadata(t *testing.T) {
+	tests := []struct {
+		name     string
+		metadata map[string]interface{}
+		expected int
+	}{
+		{
+			name:     "nil metadata",
+			metadata: nil,
+			expected: 0,
+		},
+		{
+			name: "no extra_fields key",
+			metadata: map[string]interface{}{
+				"generate_table_name": true,
+			},
+			expected: 0,
+		},
+		{
+			name: "empty array",
+			metadata: map[string]interface{}{
+				"extra_fields": []interface{}{},
+			},
+			expected: 0,
+		},
+		{
+			name: "JSON string format",
+			metadata: map[string]interface{}{
+				"extra_fields": `[{"name":"ThoughtCount","type":"int64","bun_tag":"thought_count,scanonly","json_tag":"thought_count"}]`,
+			},
+			expected: 1,
+		},
+		{
+			name: "structured format",
+			metadata: map[string]interface{}{
+				"extra_fields": []interface{}{
+					map[string]interface{}{
+						"name":     "ThoughtCount",
+						"type":     "int64",
+						"bun_tag":  "thought_count,scanonly",
+						"json_tag": "thought_count",
+					},
+				},
+			},
+			expected: 1,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			fields := LoadExtraFieldsFromMetadata(tt.metadata)
+			if len(fields) != tt.expected {
+				t.Errorf("expected %d fields, got %d", tt.expected, len(fields))
+			}
+		})
+	}
+}
+
+func TestExtraFields_InSingleFile(t *testing.T) {
+	table := models.InitTable("projects", "public")
+	table.Columns["id"] = &models.Column{
+		Name:         "id",
+		Type:         "bigint",
+		NotNull:      true,
+		IsPrimaryKey: true,
+	}
+	table.Columns["name"] = &models.Column{
+		Name:     "name",
+		Type:     "varchar",
+		Length:   255,
+		Sequence: 1,
+	}
+
+	opts := &writers.WriterOptions{
+		PackageName: "models",
+		OutputPath:  t.TempDir() + "/test.go",
+		Metadata: map[string]interface{}{
+			"extra_fields": `[{"name":"ThoughtCount","type":"int64","bun_tag":"thought_count,scanonly","json_tag":"thought_count"}]`,
+		},
+	}
+
+	writer := NewWriter(opts)
+	err := writer.WriteTable(table)
+	if err != nil {
+		t.Fatalf("WriteTable failed: %v", err)
+	}
+
+	content, _ := os.ReadFile(opts.OutputPath)
+	generated := string(content)
+
+	// Verify extra field is present with separator comment
+	expectations := []string{
+		"// --- Custom fields (managed by relspecgo generator config, issue #4) ---",
+		"ThoughtCount int64 `bun:\"thought_count,scanonly\" json:\"thought_count\"`",
+	}
+
+	for _, expected := range expectations {
+		if !strings.Contains(generated, expected) {
+			t.Errorf("Generated code missing: %q\nGenerated:\n%s", expected, generated)
+		}
+	}
+}
+
+func TestExtraFields_InMultiFile(t *testing.T) {
+	db := models.InitDatabase("testdb")
+	schema := models.InitSchema("public")
+
+	users := models.InitTable("users", "public")
+	users.Columns["id"] = &models.Column{
+		Name:         "id",
+		Type:         "bigint",
+		NotNull:      true,
+		IsPrimaryKey: true,
+	}
+	schema.Tables = append(schema.Tables, users)
+
+	posts := models.InitTable("posts", "public")
+	posts.Columns["id"] = &models.Column{
+		Name:         "id",
+		Type:         "bigint",
+		NotNull:      true,
+		IsPrimaryKey: true,
+	}
+	schema.Tables = append(schema.Tables, posts)
+
+	db.Schemas = append(db.Schemas, schema)
+
+	tmpDir := t.TempDir()
+	opts := &writers.WriterOptions{
+		PackageName: "models",
+		OutputPath:  tmpDir,
+		Metadata: map[string]interface{}{
+			"multi_file":   true,
+			"extra_fields": `[{"target_table":"users","name":"PostCount","type":"int64","bun_tag":"post_count,scanonly","json_tag":"post_count"}]`,
+		},
+	}
+
+	writer := NewWriter(opts)
+	err := writer.WriteDatabase(db)
+	if err != nil {
+		t.Fatalf("WriteDatabase failed: %v", err)
+	}
+
+	// Check users file has the extra field (matched by table name "users")
+	usersContent, _ := os.ReadFile(tmpDir + "/sql_public_users.go")
+	usersStr := string(usersContent)
+
+	if !strings.Contains(usersStr, "PostCount int64 `bun:\"post_count,scanonly\"") {
+		t.Errorf("Extra field not found in users file:\n%s", usersStr)
+	}
+
+	// Posts file should NOT have the extra field (name mismatch)
+	postsContent, _ := os.ReadFile(tmpDir + "/sql_public_posts.go")
+	postsStr := string(postsContent)
+
+	if strings.Contains(postsStr, "PostCount") {
+		t.Errorf("Extra field should not be in posts file:\n%s", postsStr)
+	}
+}
+
 func TestTypeMapper_BuildBunTag_PreservesExplicitTypeModifiers(t *testing.T) {
-	mapper := NewTypeMapper("")
+	mapper := NewTypeMapper("", "")
 
 	col := &models.Column{
 		Name:      "embedding",

pkg/writers/dbml/writer.go

@@ -3,6 +3,7 @@ package dbml
 import (
 	"fmt"
 	"os"
+	"sort"
 	"strings"
 
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
@@ -78,7 +79,7 @@ func (w *Writer) databaseToDBML(d *models.Database) string {
 	sb.WriteString("\n// Relationships\n")
 	for _, schema := range d.Schemas {
 		for _, table := range schema.Tables {
-			for _, constraint := range table.Constraints {
+			for _, constraint := range sortConstraints(table.Constraints) {
 				if constraint.Type == models.ForeignKeyConstraint {
 					sb.WriteString(w.constraintToDBML(constraint, table))
 				}
@@ -112,7 +113,7 @@ func (w *Writer) tableToDBML(t *models.Table) string {
 	tableName := fmt.Sprintf("%s.%s", t.Schema, t.Name)
 	fmt.Fprintf(&sb, "Table %s {\n", tableName)
 
-	for _, column := range t.Columns {
+	for _, column := range sortColumns(t.Columns) {
 		fmt.Fprintf(&sb, "  %s %s", column.Name, column.Type)
 
 		var attrs []string
@@ -149,7 +150,7 @@ func (w *Writer) tableToDBML(t *models.Table) string {
 
 	if len(t.Indexes) > 0 {
 		sb.WriteString("\n  indexes {\n")
-		for _, index := range t.Indexes {
+		for _, index := range sortIndexes(t.Indexes) {
 			var indexAttrs []string
 			if index.Unique {
 				indexAttrs = append(indexAttrs, "unique")
@@ -230,3 +231,48 @@ func (w *Writer) constraintToDBML(c *models.Constraint, t *models.Table) string
 
 	return refLine + "\n"
 }
+
+// sortColumns returns columns sorted by Sequence then Name for deterministic output.
+func sortColumns(columns map[string]*models.Column) []*models.Column {
+	result := make([]*models.Column, 0, len(columns))
+	for _, col := range columns {
+		result = append(result, col)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortConstraints returns constraints sorted by Sequence then Name for deterministic output.
+func sortConstraints(constraints map[string]*models.Constraint) []*models.Constraint {
+	result := make([]*models.Constraint, 0, len(constraints))
+	for _, c := range constraints {
+		result = append(result, c)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortIndexes returns indexes sorted by Sequence then Name for deterministic output.
+func sortIndexes(indexes map[string]*models.Index) []*models.Index {
+	result := make([]*models.Index, 0, len(indexes))
+	for _, idx := range indexes {
+		result = append(result, idx)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}

pkg/writers/dctx/writer.go

@@ -66,7 +66,14 @@ func (w *Writer) WriteSchema(schema *models.Schema) error {
 
 	// Add table-level relationships
 	for _, table := range tableSlice {
-		for _, rel := range table.Relationships {
+		relNames := make([]string, 0, len(table.Relationships))
+		for name := range table.Relationships {
+			relNames = append(relNames, name)
+		}
+		sort.Strings(relNames)
+
+		for _, relName := range relNames {
+			rel := table.Relationships[relName]
 			// Check if this relationship is already in the list (avoid duplicates)
 			isDuplicate := false
 			for _, existing := range allRelations {

pkg/writers/drawdb/writer.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"os"
+	"sort"
 
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
@@ -175,7 +176,7 @@ func (w *Writer) databaseToDrawDB(d *models.Database) *DrawDBSchema {
 	// Add relationships
 	for _, schemaModel := range d.Schemas {
 		for _, table := range schemaModel.Tables {
-			for _, constraint := range table.Constraints {
+			for _, constraint := range sortConstraints(table.Constraints) {
 				if constraint.Type == models.ForeignKeyConstraint && constraint.ReferencedTable != "" {
 					startTableKey := fmt.Sprintf("%s.%s", schemaModel.Name, table.Name)
 					endTableKey := fmt.Sprintf("%s.%s", constraint.ReferencedSchema, constraint.ReferencedTable)
@@ -306,7 +307,7 @@ func (w *Writer) convertTableToDrawDB(table *models.Table, schemaName string, ta
 	}
 
 	// Add fields
-	for _, column := range table.Columns {
+	for _, column := range sortColumns(table.Columns) {
 		field := &DrawDBField{
 			ID:        fieldID,
 			Name:      column.Name,
@@ -339,7 +340,7 @@ func (w *Writer) convertTableToDrawDB(table *models.Table, schemaName string, ta
 
 	// Add indexes
 	indexID := 0
-	for _, index := range table.Indexes {
+	for _, index := range sortIndexes(table.Indexes) {
 		drawIndex := &DrawDBIndex{
 			ID:     indexID,
 			Name:   index.Name,
@@ -393,3 +394,48 @@ func getColorForIndex(index int) string {
 	}
 	return colors[index%len(colors)]
 }
+
+// sortColumns returns columns sorted by Sequence then Name for deterministic output.
+func sortColumns(columns map[string]*models.Column) []*models.Column {
+	result := make([]*models.Column, 0, len(columns))
+	for _, col := range columns {
+		result = append(result, col)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortConstraints returns constraints sorted by Sequence then Name for deterministic output.
+func sortConstraints(constraints map[string]*models.Constraint) []*models.Constraint {
+	result := make([]*models.Constraint, 0, len(constraints))
+	for _, c := range constraints {
+		result = append(result, c)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortIndexes returns indexes sorted by Sequence then Name for deterministic output.
+func sortIndexes(indexes map[string]*models.Index) []*models.Index {
+	result := make([]*models.Index, 0, len(indexes))
+	for _, idx := range indexes {
+		result = append(result, idx)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}

pkg/writers/drizzle/writer.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"sort"
 	"strings"
 
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
@@ -250,7 +251,7 @@ func (w *Writer) buildTableData(table *models.Table, schema *models.Schema, db *
 	indexColumnFields := make(map[string]bool)
 
 	// Add indexes (excluding single-column unique indexes, which are handled inline)
-	for _, index := range table.Indexes {
+	for _, index := range sortIndexes(table.Indexes) {
 		// Skip single-column unique indexes (handled by .unique() modifier)
 		if index.Unique && len(index.Columns) == 1 {
 			continue
@@ -270,7 +271,7 @@ func (w *Writer) buildTableData(table *models.Table, schema *models.Schema, db *
 	}
 
 	// Add multi-column unique constraints as unique indexes
-	for _, constraint := range table.Constraints {
+	for _, constraint := range sortConstraints(table.Constraints) {
 		if constraint.Type == models.UniqueConstraint && len(constraint.Columns) > 1 {
 			// Create a unique index for this constraint
 			indexData := &IndexData{
@@ -316,6 +317,36 @@ func (w *Writer) buildTableData(table *models.Table, schema *models.Schema, db *
 	return tableData
 }
 
+// sortIndexes returns indexes sorted by Sequence then Name for deterministic output.
+func sortIndexes(indexes map[string]*models.Index) []*models.Index {
+	result := make([]*models.Index, 0, len(indexes))
+	for _, idx := range indexes {
+		result = append(result, idx)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortConstraints returns constraints sorted by Sequence then Name for deterministic output.
+func sortConstraints(constraints map[string]*models.Constraint) []*models.Constraint {
+	result := make([]*models.Constraint, 0, len(constraints))
+	for _, c := range constraints {
+		result = append(result, c)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
 // sortStrings sorts a slice of strings in place
 func sortStrings(strs []string) {
 	for i := 0; i < len(strs); i++ {
@@ -422,7 +453,8 @@ func (w *Writer) getTableEnumNames(table *models.Table, schema *models.Schema, e
 	enumNames := make([]string, 0)
 	seen := make(map[string]bool)
 
-	for _, col := range table.Columns {
+	for _, colName := range w.getSortedColumnNames(table) {
+		col := table.Columns[colName]
 		if enumMap[col.Type] || enumMap[strings.ToLower(col.Type)] {
 			// Find the enum in schema
 			for _, enum := range schema.Enums {

pkg/writers/gorm/README.md

@@ -6,6 +6,8 @@ Generates Go source files with GORM model definitions from database schema infor
 
 The GORM Writer converts RelSpec's internal database model representation into Go source code with GORM struct definitions, complete with proper tags, relationships, and methods.
 
+With `--types sqltypes`, nullable fields use the [`pkg/sqltypes`](../../sqltypes/README.md) package.
+
 ## Features
 
 - Generates GORM-compatible Go structs
@@ -48,19 +50,19 @@ func main() {
 ### CLI Examples
 
 ```bash
-# Generate GORM models from a DBML schema (default: resolvespec types)
+# Generate GORM models from a DBML schema (default: baselib pointer types)
 relspec convert --from dbml --from-path schema.dbml \
   --to gorm --to-path models.go --package models
 
-# Use standard library database/sql nullable types instead of resolvespec
+# Use standard library database/sql nullable types instead
 relspec convert --from dbml --from-path schema.dbml \
   --to gorm --to-path models.go --package models \
   --types stdlib
 
-# Explicitly select resolvespec types (same as omitting --types)
+# Select sqltypes package types (git.warky.dev/wdevs/relspecgo/pkg/sqltypes)
 relspec convert --from pgsql --from-conn "postgres://localhost/mydb" \
   --to gorm --to-path models.go --package models \
-  --types resolvespec
+  --types sqltypes
 
 # Multi-file output (one file per table)
 relspec convert --from json --from-path schema.json \
@@ -89,13 +91,13 @@ Files are named: `sql_{schema}_{table}.go`
 
 ## Generated Code Examples
 
-### Default — resolvespec types (`--types resolvespec`)
+### sqltypes package types (`--types sqltypes`)
 
 ```go
 package models
 
 import (
-    sql_types "github.com/bitechdev/ResolveSpec/pkg/spectypes"
+    sql_types "git.warky.dev/wdevs/relspecgo/pkg/sqltypes"
 )
 
 type ModelUser struct {
@@ -141,11 +143,11 @@ func (ModelUser) TableName() string {
 Controls which Go package is used for nullable column types. Set via the `--types` CLI flag or `WriterOptions.NullableTypes`:
 
 ```go
-// Use resolvespec types (default — omit NullableTypes or set to "resolvespec")
+// Use sqltypes package types
 options := &writers.WriterOptions{
     OutputPath:    "models.go",
     PackageName:   "models",
-    NullableTypes: writers.NullableTypeResolveSpec,
+    NullableTypes: writers.NullableTypeSqlTypes,
 }
 
 // Use standard library database/sql types
@@ -176,7 +178,7 @@ options := &writers.WriterOptions{
 
 The nullable type package is selected with `--types` (or `WriterOptions.NullableTypes`).
 
-| SQL Type | NOT NULL — both | Nullable — resolvespec | Nullable — stdlib |
+| SQL Type | NOT NULL — both | Nullable — sqltypes | Nullable — stdlib |
 |---|---|---|---|
 | `bigint` | `int64` | `SqlInt64` | `sql.NullInt64` |
 | `integer` | `int32` | `SqlInt32` | `sql.NullInt32` |

pkg/writers/gorm/template_data.go

@@ -134,8 +134,11 @@ func NewModelData(table *models.Table, schema string, typeMapper *TypeMapper, fl
 		Prefix:        GeneratePrefix(table.Name),
 	}
 
+	// Convert columns to fields (sorted by sequence or name)
+	columns := sortColumns(table.Columns)
+
 	// Find primary key
-	for _, col := range table.Columns {
+	for _, col := range columns {
 		if col.IsPrimaryKey {
 			// Sanitize column name to remove backticks
 			safeName := writers.SanitizeStructTagValue(col.Name)
@@ -153,8 +156,6 @@ func NewModelData(table *models.Table, schema string, typeMapper *TypeMapper, fl
 		}
 	}
 
-	// Convert columns to fields (sorted by sequence or name)
-	columns := sortColumns(table.Columns)
 	for _, col := range columns {
 		field := columnToField(col, table, typeMapper)
 		// Check for name collision with generated methods and rename if needed
@@ -202,7 +203,7 @@ func formatComment(description, comment string) string {
 
 func isStringLikePrimaryKeyType(goType string) bool {
 	switch goType {
-	case "string", "sql.NullString", "sql_types.SqlString", "sql_types.SqlUUID":
+	case "string", "*string", "sql.NullString", "sql_types.SqlString", "sql_types.SqlUUID":
 		return true
 	default:
 		return false
@@ -248,6 +249,21 @@ func sortConstraints(constraints map[string]*models.Constraint) []*models.Constr
 	return result
 }
 
+// sortIndexes sorts indexes by sequence, then by name
+func sortIndexes(indexes map[string]*models.Index) []*models.Index {
+	result := make([]*models.Index, 0, len(indexes))
+	for _, idx := range indexes {
+		result = append(result, idx)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
 // sortColumns sorts columns by sequence, then by name
 func sortColumns(columns map[string]*models.Column) []*models.Column {
 	result := make([]*models.Column, 0, len(columns))

pkg/writers/gorm/type_mapper.go

@@ -12,15 +12,15 @@ import (
 // TypeMapper handles type conversions between SQL and Go types
 type TypeMapper struct {
 	sqlTypesAlias string
-	typeStyle     string // writers.NullableTypeResolveSpec | writers.NullableTypeStdlib
+	typeStyle     string // writers.NullableTypeSqlTypes | writers.NullableTypeStdlib | writers.NullableTypeBaselib
 }
 
 // NewTypeMapper creates a new TypeMapper.
-// typeStyle should be writers.NullableTypeResolveSpec or writers.NullableTypeStdlib;
+// typeStyle should be writers.NullableTypeSqlTypes, writers.NullableTypeStdlib, or
-// an empty string defaults to resolvespec.
+// writers.NullableTypeBaselib; an empty string defaults to baselib.
 func NewTypeMapper(typeStyle string) *TypeMapper {
 	if typeStyle == "" {
-		typeStyle = writers.NullableTypeResolveSpec
+		typeStyle = writers.NullableTypeBaselib
 	}
 	return &TypeMapper{
 		sqlTypesAlias: "sql_types",
@@ -37,14 +37,20 @@ func (tm *TypeMapper) SQLTypeToGoType(sqlType string, notNull bool) string {
 
 	baseType := tm.extractBaseType(sqlType)
 
-	if tm.typeStyle == writers.NullableTypeStdlib {
+	switch tm.typeStyle {
+	case writers.NullableTypeStdlib:
 		if notNull {
 			return tm.rawGoType(baseType)
 		}
 		return tm.stdlibNullableGoType(baseType)
+	case writers.NullableTypeBaselib:
+		if notNull {
+			return tm.rawGoType(baseType)
+		}
+		return tm.baselibNullableGoType(baseType)
 	}
 
-	// resolvespec (default)
+	// sqltypes
 	if notNull {
 		return tm.baseGoType(baseType)
 	}
@@ -212,7 +218,7 @@ func (tm *TypeMapper) nullableGoType(sqlType string) string {
 // arrayGoType returns the Go type for a PostgreSQL array column.
 // The baseElemType is the canonical base type (e.g. "text", "integer").
 func (tm *TypeMapper) arrayGoType(baseElemType string) string {
-	if tm.typeStyle == writers.NullableTypeStdlib {
+	if tm.typeStyle == writers.NullableTypeStdlib || tm.typeStyle == writers.NullableTypeBaselib {
 		return tm.stdlibArrayGoType(baseElemType)
 	}
 	typeMap := map[string]string{
@@ -305,6 +311,38 @@ func (tm *TypeMapper) stdlibNullableGoType(sqlType string) string {
 	return "sql.NullString"
 }
 
+// baselibNullableGoType returns plain Go pointer types for nullable columns.
+func (tm *TypeMapper) baselibNullableGoType(sqlType string) string {
+	typeMap := map[string]string{
+		"integer": "*int32", "int": "*int32", "int4": "*int32", "serial": "*int32",
+		"smallint": "*int16", "int2": "*int16", "smallserial": "*int16",
+		"bigint": "*int64", "int8": "*int64", "bigserial": "*int64",
+		"boolean": "*bool", "bool": "*bool",
+		"real": "*float32", "float4": "*float32",
+		"double precision": "*float64", "float8": "*float64",
+		"numeric": "*float64", "decimal": "*float64", "money": "*float64",
+		"text": "*string", "varchar": "*string", "char": "*string",
+		"character": "*string", "citext": "*string", "bpchar": "*string",
+		"inet": "*string", "cidr": "*string", "macaddr": "*string",
+		"uuid": "*string", "json": "*string", "jsonb": "*string",
+		"timestamp":                   "*time.Time",
+		"timestamp without time zone": "*time.Time",
+		"timestamp with time zone":    "*time.Time",
+		"timestamptz":                 "*time.Time",
+		"date":                        "*time.Time",
+		"time":                        "*time.Time",
+		"time without time zone":      "*time.Time",
+		"time with time zone":         "*time.Time",
+		"timetz":                      "*time.Time",
+		"bytea":                       "[]byte",
+		"vector":                      "[]float32",
+	}
+	if goType, ok := typeMap[sqlType]; ok {
+		return goType
+	}
+	return "*string"
+}
+
 // stdlibArrayGoType returns a plain Go slice type for array columns in stdlib mode.
 func (tm *TypeMapper) stdlibArrayGoType(baseElemType string) string {
 	typeMap := map[string]string{
@@ -377,7 +415,7 @@ func (tm *TypeMapper) BuildGormTag(column *models.Column, table *models.Table) s
 
 	// Check for unique constraint
 	if table != nil {
-		for _, constraint := range table.Constraints {
+		for _, constraint := range sortConstraints(table.Constraints) {
 			if constraint.Type == models.UniqueConstraint {
 				for _, col := range constraint.Columns {
 					if col == column.Name {
@@ -393,7 +431,7 @@ func (tm *TypeMapper) BuildGormTag(column *models.Column, table *models.Table) s
 		}
 
 		// Check for index
-		for _, index := range table.Indexes {
+		for _, index := range sortIndexes(table.Indexes) {
 			for _, col := range index.Columns {
 				if col == column.Name {
 					if index.Unique {
@@ -467,16 +505,19 @@ func (tm *TypeMapper) NeedsFmtImport(generateGetIDStr bool) bool {
 	return generateGetIDStr
 }
 
-// GetSQLTypesImport returns the import path for the ResolveSpec spectypes package.
+// GetSQLTypesImport returns the import path for the sqltypes package.
 func (tm *TypeMapper) GetSQLTypesImport() string {
-	return "github.com/bitechdev/ResolveSpec/pkg/spectypes"
+	return "git.warky.dev/wdevs/relspecgo/pkg/sqltypes"
 }
 
 // GetNullableTypeImportLine returns the full Go import line for the nullable type
 // package (ready to pass to AddImport). Returns empty string when no import is needed.
 func (tm *TypeMapper) GetNullableTypeImportLine() string {
-	if tm.typeStyle == writers.NullableTypeStdlib {
+	switch tm.typeStyle {
+	case writers.NullableTypeStdlib:
 		return "\"database/sql\""
+	case writers.NullableTypeBaselib:
+		return ""
 	}
 	return fmt.Sprintf("%s \"%s\"", tm.sqlTypesAlias, tm.GetSQLTypesImport())
 }

pkg/writers/gorm/writer.go

@@ -77,7 +77,7 @@ func (w *Writer) writeSingleFile(db *models.Database) error {
 	packageName := w.getPackageName()
 	templateData := NewTemplateData(packageName, w.config)
 
-	// Add nullable types import (resolvespec or stdlib depending on options)
+	// Add nullable types import (sqltypes or stdlib depending on options)
 	templateData.AddImport(w.typeMapper.GetNullableTypeImportLine())
 
 	// Collect all models
@@ -171,7 +171,7 @@ func (w *Writer) writeMultiFile(db *models.Database) error {
 			// Create template data for this single table
 			templateData := NewTemplateData(packageName, w.config)
 
-			// Add nullable types import (resolvespec or stdlib depending on options)
+			// Add nullable types import (sqltypes or stdlib depending on options)
 			templateData.AddImport(w.typeMapper.GetNullableTypeImportLine())
 
 			// Create model data

pkg/writers/gorm/writer_test.go

@@ -70,7 +70,7 @@ func TestWriter_WriteTable(t *testing.T) {
 		"ID",
 		"int64",
 		"Email",
-		"sql_types.SqlString",
+		"*string",
 		"CreatedAt",
 		"time.Time",
 		"gorm:\"column:id",
@@ -700,17 +700,17 @@ func TestTypeMapper_SQLTypeToGoType(t *testing.T) {
 		want    string
 	}{
 		{"bigint", true, "int64"},
-		{"bigint", false, "sql_types.SqlInt64"},
+		{"bigint", false, "*int64"},
 		{"varchar", true, "string"},
-		{"varchar", false, "sql_types.SqlString"},
+		{"varchar", false, "*string"},
 		{"timestamp", true, "time.Time"},
-		{"timestamp", false, "sql_types.SqlTimeStamp"},
+		{"timestamp", false, "*time.Time"},
 		{"boolean", true, "bool"},
-		{"boolean", false, "sql_types.SqlBool"},
+		{"boolean", false, "*bool"},
-		{"text[]", true, "sql_types.SqlStringArray"},
+		{"text[]", true, "[]string"},
-		{"text[]", false, "sql_types.SqlStringArray"},
+		{"text[]", false, "[]string"},
-		{"integer[]", true, "sql_types.SqlInt32Array"},
+		{"integer[]", true, "[]int32"},
-		{"bigint[]", false, "sql_types.SqlInt64Array"},
+		{"bigint[]", false, "[]int64"},
 	}
 
 	for _, tt := range tests {
@@ -757,3 +757,48 @@ func TestTypeMapper_BuildGormTag_PreservesExplicitTypeModifiers(t *testing.T) {
 		t.Fatalf("type modifier appears duplicated in %q", tag)
 	}
 }
+
+// TestTypeMapper_BuildGormTag_MultipleUniqueIndexesDeterministic verifies
+// that when a column belongs to a unique constraint and more than one
+// unique index, the "uniqueIndex:" tag fragments always appear in the same
+// order across repeated calls, instead of following Go's randomized map
+// iteration order over Table.Constraints and Table.Indexes.
+func TestTypeMapper_BuildGormTag_MultipleUniqueIndexesDeterministic(t *testing.T) {
+	mapper := NewTypeMapper("")
+	table := &models.Table{
+		Name: "accounts",
+		Constraints: map[string]*models.Constraint{
+			"uq_z_accounts_email": {
+				Name:    "uq_z_accounts_email",
+				Type:    models.UniqueConstraint,
+				Columns: []string{"email"},
+			},
+		},
+		Indexes: map[string]*models.Index{
+			"idx_z_accounts_email_tenant": {
+				Name:    "idx_z_accounts_email_tenant",
+				Columns: []string{"email", "tenant_id"},
+				Unique:  true,
+			},
+			"idx_a_accounts_email_region": {
+				Name:    "idx_a_accounts_email_region",
+				Columns: []string{"email", "region_id"},
+				Unique:  true,
+			},
+		},
+	}
+	column := &models.Column{Name: "email", Type: "varchar", Length: 255, NotNull: true}
+
+	first := mapper.BuildGormTag(column, table)
+	for i := 0; i < 50; i++ {
+		got := mapper.BuildGormTag(column, table)
+		if got != first {
+			t.Fatalf("BuildGormTag() is non-deterministic across calls: %q vs %q", first, got)
+		}
+	}
+
+	wantOrder := "uniqueIndex:uq_z_accounts_email;uniqueIndex:idx_a_accounts_email_region;uniqueIndex:idx_z_accounts_email_tenant"
+	if !strings.Contains(first, wantOrder) {
+		t.Errorf("BuildGormTag() = %q, want uniqueIndex tags sorted (constraint before indexes, indexes by name): %q", first, wantOrder)
+	}
+}

pkg/writers/graphql/writer.go

@@ -233,7 +233,8 @@ func (w *Writer) tableToGraphQL(table *models.Table, db *models.Database, schema
 	// Add relation fields
 	relationFields = w.generateRelationFields(table, db, schema)
 
-	// Write fields in order: ID, scalars (sorted), relations (sorted)
+	// Write fields in order: ID (sorted), scalars (sorted), relations (sorted)
+	sort.Strings(idFields)
 	for _, field := range idFields {
 		sb.WriteString(field + "\n")
 	}

pkg/writers/pgsql/migration_writer.go

@@ -239,7 +239,8 @@ func (w *MigrationWriter) generateDropScripts(model *models.Schema, current *mod
 		}
 
 		// Check each constraint in current database
-		for constraintName, currentConstraint := range currentTable.Constraints {
+		for _, currentConstraint := range sortConstraints(currentTable.Constraints) {
+			constraintName := currentConstraint.Name
 			modelConstraint, existsInModel := modelTable.Constraints[constraintName]
 
 			shouldDrop := false
@@ -252,7 +253,8 @@ func (w *MigrationWriter) generateDropScripts(model *models.Schema, current *mod
 			if shouldDrop && currentConstraint.Type == models.PrimaryKeyConstraint {
 				// Drop FK constraints that depend on this PK before dropping the PK itself.
 				for _, otherTable := range current.Tables {
-					for fkName, fkConstraint := range otherTable.Constraints {
+					for _, fkConstraint := range sortConstraints(otherTable.Constraints) {
+						fkName := fkConstraint.Name
 						if fkConstraint.Type != models.ForeignKeyConstraint {
 							continue
 						}
@@ -310,7 +312,8 @@ func (w *MigrationWriter) generateDropScripts(model *models.Schema, current *mod
 		}
 
 		// Check indexes
-		for indexName, currentIndex := range currentTable.Indexes {
+		for _, currentIndex := range sortIndexes(currentTable.Indexes) {
+			indexName := currentIndex.Name
 			modelIndex, existsInModel := modelTable.Indexes[indexName]
 
 			shouldDrop := false
@@ -401,7 +404,7 @@ func (w *MigrationWriter) generateAlterTableScripts(schema *models.Schema, model
 	}
 
 	// Check each model column
-	for _, modelCol := range modelTable.Columns {
+	for _, modelCol := range sortColumns(modelTable.Columns) {
 		currentCol, exists := currentColumns[strings.ToLower(modelCol.Name)]
 
 		if !exists {
@@ -518,7 +521,8 @@ func (w *MigrationWriter) generateIndexScripts(model *models.Schema, current *mo
 
 		// Process primary keys first - check explicit constraints
 		foundExplicitPK := false
-		for constraintName, constraint := range modelTable.Constraints {
+		for _, constraint := range sortConstraints(modelTable.Constraints) {
+			constraintName := constraint.Name
 			if constraint.Type == models.PrimaryKeyConstraint {
 				foundExplicitPK = true
 				shouldCreate := true
@@ -603,7 +607,8 @@ func (w *MigrationWriter) generateIndexScripts(model *models.Schema, current *mo
 		}
 
 		// Process indexes
-		for indexName, modelIndex := range modelTable.Indexes {
+		for _, modelIndex := range sortIndexes(modelTable.Indexes) {
+			indexName := modelIndex.Name
 			// Skip primary key indexes
 			if strings.HasPrefix(strings.ToLower(indexName), "pk_") {
 				continue
@@ -697,7 +702,8 @@ func (w *MigrationWriter) generateForeignKeyScripts(model *models.Schema, curren
 		currentTable := currentTables[strings.ToLower(modelTable.Name)]
 
 		// Process each constraint
-		for constraintName, constraint := range modelTable.Constraints {
+		for _, constraint := range sortConstraints(modelTable.Constraints) {
+			constraintName := constraint.Name
 			if constraint.Type != models.ForeignKeyConstraint {
 				continue
 			}
@@ -787,7 +793,7 @@ func (w *MigrationWriter) generateCommentScripts(model *models.Schema, current *
 		}
 
 		// Column comments
-		for _, col := range modelTable.Columns {
+		for _, col := range sortColumns(modelTable.Columns) {
 			if col.Description != "" {
 				sql, err := w.executor.ExecuteCommentColumn(CommentColumnData{
 					SchemaName: model.Name,

pkg/writers/pgsql/templates.go

@@ -545,7 +545,7 @@ func BuildAuditFunctionData(
 
 	// Build list of audited columns
 	auditedColumns := make([]*models.Column, 0)
-	for _, col := range table.Columns {
+	for _, col := range sortColumns(table.Columns) {
 		if col.Name == pk.Name {
 			continue
 		}

pkg/writers/pgsql/writer.go

@@ -199,7 +199,7 @@ func (w *Writer) GenerateSchemaStatements(schema *models.Schema) ([]string, erro
 	for _, table := range schema.Tables {
 		// First check for explicit PrimaryKeyConstraint
 		var pkConstraint *models.Constraint
-		for _, constraint := range table.Constraints {
+		for _, constraint := range sortConstraints(table.Constraints) {
 			if constraint.Type == models.PrimaryKeyConstraint {
 				pkConstraint = constraint
 				break
@@ -255,7 +255,7 @@ func (w *Writer) GenerateSchemaStatements(schema *models.Schema) ([]string, erro
 
 	// Phase 5: Indexes
 	for _, table := range schema.Tables {
-		for _, index := range table.Indexes {
+		for _, index := range sortIndexes(table.Indexes) {
 			// Skip primary key indexes
 			if strings.HasSuffix(index.Name, "_pkey") {
 				continue
@@ -298,7 +298,7 @@ func (w *Writer) GenerateSchemaStatements(schema *models.Schema) ([]string, erro
 
 	// Phase 5.5: Unique constraints
 	for _, table := range schema.Tables {
-		for _, constraint := range table.Constraints {
+		for _, constraint := range sortConstraints(table.Constraints) {
 			if constraint.Type != models.UniqueConstraint {
 				continue
 			}
@@ -321,7 +321,7 @@ func (w *Writer) GenerateSchemaStatements(schema *models.Schema) ([]string, erro
 
 	// Phase 5.7: Check constraints
 	for _, table := range schema.Tables {
-		for _, constraint := range table.Constraints {
+		for _, constraint := range sortConstraints(table.Constraints) {
 			if constraint.Type != models.CheckConstraint {
 				continue
 			}
@@ -344,7 +344,7 @@ func (w *Writer) GenerateSchemaStatements(schema *models.Schema) ([]string, erro
 
 	// Phase 6: Foreign keys
 	for _, table := range schema.Tables {
-		for _, constraint := range table.Constraints {
+		for _, constraint := range sortConstraints(table.Constraints) {
 			if constraint.Type != models.ForeignKeyConstraint {
 				continue
 			}
@@ -394,7 +394,7 @@ func (w *Writer) GenerateSchemaStatements(schema *models.Schema) ([]string, erro
 			statements = append(statements, stmt)
 		}
 
-		for _, column := range table.Columns {
+		for _, column := range sortColumns(table.Columns) {
 			if column.Comment != "" {
 				stmt := fmt.Sprintf("COMMENT ON COLUMN %s.%s IS '%s'",
 					w.qualTable(schema.SQLName(), table.SQLName()), column.SQLName(), escapeQuote(column.Comment))
@@ -866,10 +866,9 @@ func (w *Writer) writePrimaryKeys(schema *models.Schema) error {
 	for _, table := range schema.Tables {
 		// Find primary key constraint
 		var pkConstraint *models.Constraint
-		for name, constraint := range table.Constraints {
+		for _, constraint := range sortConstraints(table.Constraints) {
 			if constraint.Type == models.PrimaryKeyConstraint {
 				pkConstraint = constraint
-				_ = name // Use the name variable
 				break
 			}
 		}
@@ -1475,6 +1474,51 @@ func resolveIndexColumn(table *models.Table, colName string) (*models.Column, bo
 	return nil, false
 }
 
+// sortColumns returns columns sorted by Sequence then Name for deterministic output.
+func sortColumns(columns map[string]*models.Column) []*models.Column {
+	result := make([]*models.Column, 0, len(columns))
+	for _, col := range columns {
+		result = append(result, col)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortConstraints returns constraints sorted by Sequence then Name for deterministic output.
+func sortConstraints(constraints map[string]*models.Constraint) []*models.Constraint {
+	result := make([]*models.Constraint, 0, len(constraints))
+	for _, c := range constraints {
+		result = append(result, c)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortIndexes returns indexes sorted by Sequence then Name for deterministic output.
+func sortIndexes(indexes map[string]*models.Index) []*models.Index {
+	result := make([]*models.Index, 0, len(indexes))
+	for _, idx := range indexes {
+		result = append(result, idx)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
 // formatStringList formats a list of strings as a SQL-safe comma-separated quoted list
 func formatStringList(items []string) string {
 	quoted := make([]string, len(items))

pkg/writers/prisma/writer.go

@@ -549,14 +549,14 @@ func (w *Writer) generateBlockAttributes(table *models.Table) string {
 	}
 
 	// @@unique for multi-column unique constraints
-	for _, constraint := range table.Constraints {
+	for _, constraint := range sortConstraints(table.Constraints) {
 		if constraint.Type == models.UniqueConstraint && len(constraint.Columns) > 1 {
 			fmt.Fprintf(&sb, "  @@unique([%s])\n", strings.Join(constraint.Columns, ", "))
 		}
 	}
 
 	// @@index for indexes
-	for _, index := range table.Indexes {
+	for _, index := range sortIndexes(table.Indexes) {
 		if !index.Unique { // Unique indexes are handled by @@unique
 			fmt.Fprintf(&sb, "  @@index([%s])\n", strings.Join(index.Columns, ", "))
 		}
@@ -564,3 +564,33 @@ func (w *Writer) generateBlockAttributes(table *models.Table) string {
 
 	return sb.String()
 }
+
+// sortConstraints returns constraints sorted by Sequence then Name for deterministic output.
+func sortConstraints(constraints map[string]*models.Constraint) []*models.Constraint {
+	result := make([]*models.Constraint, 0, len(constraints))
+	for _, c := range constraints {
+		result = append(result, c)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortIndexes returns indexes sorted by Sequence then Name for deterministic output.
+func sortIndexes(indexes map[string]*models.Index) []*models.Index {
+	result := make([]*models.Index, 0, len(indexes))
+	for _, idx := range indexes {
+		result = append(result, idx)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}

pkg/writers/sqlexec/writer.go

@@ -7,6 +7,7 @@ import (
 
 	"github.com/jackc/pgx/v5"
 
+	"git.warky.dev/wdevs/relspecgo/pkg/assetloader"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/pgsql"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
@@ -138,7 +139,28 @@ func (w *Writer) executeScripts(ctx context.Context, conn *pgx.Conn, scripts []*
 			script.Name, script.Priority, script.Sequence)
 
 		// Execute the SQL script
-		_, err := conn.Exec(ctx, script.SQL)
+		sql, err := processEmbedDirectives(script)
+		if err != nil {
+			if ignoreErrors {
+				fmt.Printf("⚠ Error preparing %s: %v (continuing due to --ignore-errors)\n", script.Name, err)
+				failedScripts = append(failedScripts, struct {
+					name     string
+					priority int
+					sequence uint
+					err      error
+				}{
+					name:     script.Name,
+					priority: script.Priority,
+					sequence: script.Sequence,
+					err:      err,
+				})
+				continue
+			}
+			return fmt.Errorf("script %s (Priority=%d, Sequence=%d): %w",
+				script.Name, script.Priority, script.Sequence, err)
+		}
+
+		_, err = conn.Exec(ctx, sql)
 		if err != nil {
 			if ignoreErrors {
 				fmt.Printf("⚠ Error executing %s: %v (continuing due to --ignore-errors)\n", script.Name, err)
@@ -179,3 +201,11 @@ func (w *Writer) executeScripts(ctx context.Context, conn *pgx.Conn, scripts []*
 
 	return nil
 }
+
+func processEmbedDirectives(script *models.Script) (string, error) {
+	sqlPath, _ := script.Metadata[assetloader.ScriptSourcePathMetadataKey].(string)
+	if sqlPath == "" {
+		return script.SQL, nil
+	}
+	return assetloader.ProcessEmbedDirectives(sqlPath, script.SQL)
+}

pkg/writers/sqlexec/writer_test.go

@@ -1,8 +1,12 @@
 package sqlexec
 
 import (
+	"os"
+	"path/filepath"
+	"strings"
 	"testing"
 
+	"git.warky.dev/wdevs/relspecgo/pkg/assetloader"
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
 	"git.warky.dev/wdevs/relspecgo/pkg/writers"
 )
@@ -216,3 +220,36 @@ func TestWriter_WriteSchema_EmptyScripts(t *testing.T) {
 //     // Verify results
 //     // Cleanup
 // }
+
+func TestProcessEmbedDirectives_UsesScriptSourcePath(t *testing.T) {
+	dir := t.TempDir()
+	sqlPath := filepath.Join(dir, "1_001_seed.sql")
+	if err := os.WriteFile(filepath.Join(dir, "body.txt"), []byte("writer text"), 0o644); err != nil {
+		t.Fatal(err)
+	}
+
+	script := models.InitScript("seed")
+	script.SQL = "-- @embed: path=body.txt var=:body mode=text\nSELECT :body;"
+	script.Metadata[assetloader.ScriptSourcePathMetadataKey] = sqlPath
+
+	got, err := processEmbedDirectives(script)
+	if err != nil {
+		t.Fatalf("processEmbedDirectives failed: %v", err)
+	}
+	if !strings.Contains(got, "SELECT 'writer text';") {
+		t.Fatalf("script embed directive was not processed:\n%s", got)
+	}
+}
+
+func TestProcessEmbedDirectives_NoSourcePathLeavesSQLUnchanged(t *testing.T) {
+	script := models.InitScript("seed")
+	script.SQL = "-- @embed: path=missing.txt var=:body mode=text\nSELECT :body;"
+
+	got, err := processEmbedDirectives(script)
+	if err != nil {
+		t.Fatalf("processEmbedDirectives failed: %v", err)
+	}
+	if got != script.SQL {
+		t.Fatalf("expected unchanged SQL without source path, got:\n%s", got)
+	}
+}

pkg/writers/sqlite/templates.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"embed"
 	"fmt"
+	"sort"
 	"text/template"
 
 	"git.warky.dev/wdevs/relspecgo/pkg/models"
@@ -133,15 +134,11 @@ func (te *TemplateExecutor) ExecuteCreateForeignKey(data ConstraintTemplateData)
 
 // BuildTableTemplateData builds TableTemplateData from a models.Table
 func BuildTableTemplateData(schema string, table *models.Table) TableTemplateData {
-	// Get sorted columns
+	columns := sortColumns(table.Columns)
-	columns := make([]*models.Column, 0, len(table.Columns))
-	for _, col := range table.Columns {
-		columns = append(columns, col)
-	}
 
 	// Find primary key constraint
 	var pk *models.Constraint
-	for _, constraint := range table.Constraints {
+	for _, constraint := range sortConstraints(table.Constraints) {
 		if constraint.Type == models.PrimaryKeyConstraint {
 			pk = constraint
 			break
@@ -151,7 +148,7 @@ func BuildTableTemplateData(schema string, table *models.Table) TableTemplateDat
 	// If no explicit primary key constraint, build one from columns with IsPrimaryKey=true
 	if pk == nil {
 		pkCols := []string{}
-		for _, col := range table.Columns {
+		for _, col := range columns {
 			if col.IsPrimaryKey {
 				pkCols = append(pkCols, col.Name)
 			}
@@ -172,3 +169,48 @@ func BuildTableTemplateData(schema string, table *models.Table) TableTemplateDat
 		PrimaryKey: pk,
 	}
 }
+
+// sortColumns returns columns sorted by Sequence then Name for deterministic output.
+func sortColumns(columns map[string]*models.Column) []*models.Column {
+	result := make([]*models.Column, 0, len(columns))
+	for _, col := range columns {
+		result = append(result, col)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortConstraints returns constraints sorted by Sequence then Name for deterministic output.
+func sortConstraints(constraints map[string]*models.Constraint) []*models.Constraint {
+	result := make([]*models.Constraint, 0, len(constraints))
+	for _, c := range constraints {
+		result = append(result, c)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}
+
+// sortIndexes returns indexes sorted by Sequence then Name for deterministic output.
+func sortIndexes(indexes map[string]*models.Index) []*models.Index {
+	result := make([]*models.Index, 0, len(indexes))
+	for _, idx := range indexes {
+		result = append(result, idx)
+	}
+	sort.Slice(result, func(i, j int) bool {
+		if result[i].Sequence > 0 && result[j].Sequence > 0 {
+			return result[i].Sequence < result[j].Sequence
+		}
+		return result[i].Name < result[j].Name
+	})
+	return result
+}

pkg/writers/sqlite/writer.go

@@ -143,7 +143,7 @@ func (w *Writer) writeTable(schema string, table *models.Table) error {
 
 // writeIndexes writes indexes for a table
 func (w *Writer) writeIndexes(schema string, table *models.Table) error {
-	for _, index := range table.Indexes {
+	for _, index := range sortIndexes(table.Indexes) {
 		// Skip primary key indexes
 		if strings.HasSuffix(index.Name, "_pkey") {
 			continue
@@ -174,7 +174,7 @@ func (w *Writer) writeIndexes(schema string, table *models.Table) error {
 
 // writeUniqueConstraints writes unique constraints as unique indexes
 func (w *Writer) writeUniqueConstraints(schema string, table *models.Table) error {
-	for _, constraint := range table.Constraints {
+	for _, constraint := range sortConstraints(table.Constraints) {
 		if constraint.Type != models.UniqueConstraint {
 			continue
 		}
@@ -195,7 +195,7 @@ func (w *Writer) writeUniqueConstraints(schema string, table *models.Table) erro
 	}
 
 	// Also handle unique indexes from the Indexes map
-	for _, index := range table.Indexes {
+	for _, index := range sortIndexes(table.Indexes) {
 		if !index.Unique {
 			continue
 		}
@@ -232,7 +232,7 @@ func (w *Writer) writeUniqueConstraints(schema string, table *models.Table) erro
 
 // writeCheckConstraints writes check constraints as comments
 func (w *Writer) writeCheckConstraints(schema string, table *models.Table) error {
-	for _, constraint := range table.Constraints {
+	for _, constraint := range sortConstraints(table.Constraints) {
 		if constraint.Type != models.CheckConstraint {
 			continue
 		}
@@ -257,7 +257,7 @@ func (w *Writer) writeCheckConstraints(schema string, table *models.Table) error
 
 // writeForeignKeys writes foreign keys as comments
 func (w *Writer) writeForeignKeys(schema string, table *models.Table) error {
-	for _, constraint := range table.Constraints {
+	for _, constraint := range sortConstraints(table.Constraints) {
 		if constraint.Type != models.ForeignKeyConstraint {
 			continue
 		}

pkg/writers/template/safe_access.go

@@ -60,7 +60,7 @@ func Has(m interface{}, key interface{}) bool {
 	v := reflect.ValueOf(m)
 
 	// Dereference pointers
-	for v.Kind() == reflect.Ptr {
+	for v.Kind() == reflect.Pointer {
 		if v.IsNil() {
 			return false
 		}
@@ -102,7 +102,7 @@ func Merge(maps ...interface{}) map[interface{}]interface{} {
 		v := reflect.ValueOf(m)
 
 		// Dereference pointers
-		for v.Kind() == reflect.Ptr {
+		for v.Kind() == reflect.Pointer {
 			if v.IsNil() {
 				continue
 			}
@@ -129,7 +129,7 @@ func Pick(m interface{}, keys ...interface{}) map[interface{}]interface{} {
 	v := reflect.ValueOf(m)
 
 	// Dereference pointers
-	for v.Kind() == reflect.Ptr {
+	for v.Kind() == reflect.Pointer {
 		if v.IsNil() {
 			return result
 		}
@@ -158,7 +158,7 @@ func Omit(m interface{}, keys ...interface{}) map[interface{}]interface{} {
 	v := reflect.ValueOf(m)
 
 	// Dereference pointers
-	for v.Kind() == reflect.Ptr {
+	for v.Kind() == reflect.Pointer {
 		if v.IsNil() {
 			return result
 		}
@@ -237,7 +237,7 @@ func Pluck(slice interface{}, field string) []interface{} {
 	v := reflect.ValueOf(slice)
 
 	// Dereference pointers
-	for v.Kind() == reflect.Ptr {
+	for v.Kind() == reflect.Pointer {
 		if v.IsNil() {
 			return []interface{}{}
 		}
@@ -253,13 +253,18 @@ func Pluck(slice interface{}, field string) []interface{} {
 		item := v.Index(i)
 
 		// Dereference item pointers
-		for item.Kind() == reflect.Ptr {
+		nilItem := false
+		for item.Kind() == reflect.Pointer {
 			if item.IsNil() {
 				result = append(result, nil)
-				continue
+				nilItem = true
+				break
 			}
 			item = item.Elem()
 		}
+		if nilItem {
+			continue
+		}
 
 		switch item.Kind() {
 		case reflect.Struct:

pkg/writers/template/writer_test.go

@@ -0,0 +1,87 @@
+package template
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	"git.warky.dev/wdevs/relspecgo/pkg/models"
+	"git.warky.dev/wdevs/relspecgo/pkg/writers"
+)
+
+func TestWriterTableIndexValuesDeterministic(t *testing.T) {
+	dir := t.TempDir()
+	templatePath := filepath.Join(dir, "indexes.tmpl")
+	outputDir := filepath.Join(dir, "out")
+	outputPath := filepath.Join(outputDir, "accounts.txt")
+	templateBody := "{{range values .Table.Indexes}}{{.Name}}:{{join .Columns \",\"}}\n{{end}}"
+
+	if err := os.MkdirAll(outputDir, 0755); err != nil {
+		t.Fatalf("create output dir: %v", err)
+	}
+	if err := os.WriteFile(templatePath, []byte(templateBody), 0644); err != nil {
+		t.Fatalf("write template: %v", err)
+	}
+
+	db := databaseWithMultipleIndexes()
+	var first []byte
+	const runs = 100
+	for i := 0; i < runs; i++ {
+		writer, err := NewWriter(&writers.WriterOptions{
+			OutputPath: outputDir,
+			Metadata: map[string]interface{}{
+				"template_path": templatePath,
+				"mode":          string(TableMode),
+			},
+		})
+		if err != nil {
+			t.Fatalf("new writer: %v", err)
+		}
+
+		if err := writer.WriteDatabase(db); err != nil {
+			t.Fatalf("write database run %d: %v", i, err)
+		}
+
+		got, err := os.ReadFile(outputPath)
+		if err != nil {
+			t.Fatalf("read output run %d: %v", i, err)
+		}
+
+		if i == 0 {
+			first = got
+			continue
+		}
+		if string(got) != string(first) {
+			t.Fatalf("run %d output differed from first run\nfirst:\n%s\nrun %d:\n%s", i, first, i, got)
+		}
+	}
+
+	want := strings.Join([]string{
+		"idx_accounts_email:email",
+		"idx_accounts_last_login:last_login",
+		"idx_accounts_name:name",
+		"idx_accounts_status:status",
+		"idx_accounts_tenant:tenant_id",
+		"",
+	}, "\n")
+	if string(first) != want {
+		t.Fatalf("unexpected index order\nwant:\n%s\ngot:\n%s", want, first)
+	}
+}
+
+func databaseWithMultipleIndexes() *models.Database {
+	db := models.InitDatabase("test")
+	schema := models.InitSchema("public")
+	table := models.InitTable("accounts", "public")
+
+	table.Indexes["idx_accounts_status"] = &models.Index{Name: "idx_accounts_status", Table: table.Name, Schema: schema.Name, Columns: []string{"status"}}
+	table.Indexes["idx_accounts_email"] = &models.Index{Name: "idx_accounts_email", Table: table.Name, Schema: schema.Name, Columns: []string{"email"}}
+	table.Indexes["idx_accounts_tenant"] = &models.Index{Name: "idx_accounts_tenant", Table: table.Name, Schema: schema.Name, Columns: []string{"tenant_id"}}
+	table.Indexes["idx_accounts_name"] = &models.Index{Name: "idx_accounts_name", Table: table.Name, Schema: schema.Name, Columns: []string{"name"}}
+	table.Indexes["idx_accounts_last_login"] = &models.Index{Name: "idx_accounts_last_login", Table: table.Name, Schema: schema.Name, Columns: []string{"last_login"}}
+
+	schema.Tables = append(schema.Tables, table)
+	db.Schemas = append(db.Schemas, schema)
+	return db
+}

pkg/writers/typeorm/writer.go

@@ -531,7 +531,13 @@ func (w *Writer) generateInverseRelations(table *models.Table, schema *models.Sc
 
 // generateManyToManyRelations generates @ManyToMany fields
 func (w *Writer) generateManyToManyRelations(table *models.Table, schema *models.Schema, joinTables map[string]bool, sb *strings.Builder) {
-	for joinTableName := range joinTables {
+	joinTableNames := make([]string, 0, len(joinTables))
+	for name := range joinTables {
+		joinTableNames = append(joinTableNames, name)
+	}
+	sort.Strings(joinTableNames)
+
+	for _, joinTableName := range joinTableNames {
 		joinTable := w.findTable(joinTableName, schema)
 		if joinTable == nil {
 			continue

pkg/writers/writer.go

@@ -23,13 +23,35 @@ type Writer interface {
 // NullableType constants control which Go package is used for nullable column types
 // in code-generation writers (Bun, GORM).
 const (
-	// NullableTypeResolveSpec uses github.com/bitechdev/ResolveSpec/pkg/spectypes
+	// NullableTypeSqlTypes uses git.warky.dev/wdevs/relspecgo/pkg/sqltypes
-	// (SqlString, SqlInt32, SqlVector, SqlStringArray, …). This is the default.
+	// (SqlString, SqlInt32, SqlVector, SqlStringArray, …).
-	NullableTypeResolveSpec = "resolvespec"
+	NullableTypeSqlTypes = "sqltypes"
 
 	// NullableTypeStdlib uses the standard library database/sql nullable types
 	// (sql.NullString, sql.NullInt32, …) and plain Go slices for arrays.
 	NullableTypeStdlib = "stdlib"
+
+	// NullableTypeBaselib uses plain Go pointer types for nullable columns
+	// (*string, *int32, *time.Time, …) and plain Go slices for arrays.
+	// No external imports are required beyond the standard library. This is the default.
+	NullableTypeBaselib = "baselib"
+)
+
+// NullableArrays constants control how nullable PostgreSQL array columns are
+// represented in native-slice code-generation writers (Bun in stdlib/baselib
+// mode).
+const (
+	// NullableArraysSlice represents every array column (nullable or not) as
+	// a plain slice ([]string, []int32, …). SQL NULL and '{}' both scan into
+	// a zero-length/nil slice, so callers cannot distinguish them. This is
+	// the default.
+	NullableArraysSlice = "slice"
+
+	// NullableArraysPointerSlice represents nullable array columns as a
+	// pointer to a slice (*[]string, *[]int32, …), so callers can
+	// distinguish SQL NULL (nil pointer) from '{}' (pointer to an empty
+	// slice). NOT NULL array columns are unaffected and remain plain slices.
+	NullableArraysPointerSlice = "pointer_slice"
 )
 
 // WriterOptions contains common options for writers
@@ -47,10 +69,20 @@ type WriterOptions struct {
 
 	// NullableTypes selects the Go type package used for nullable columns in
 	// code-generation writers (bun, gorm). Accepted values:
-	//   "resolvespec" (default) — github.com/bitechdev/ResolveSpec/pkg/spectypes
+	//   "sqltypes"              — git.warky.dev/wdevs/relspecgo/pkg/sqltypes
 	//   "stdlib"                — database/sql (sql.NullString, sql.NullInt32, …)
+	//   "baselib" (default)     — plain Go pointer types (*string, *int32, …)
 	NullableTypes string
 
+	// NullableArrays selects how nullable PostgreSQL array columns are
+	// represented in native-slice code-generation writers (bun). Accepted values:
+	//   "slice" (default)      — plain slice for every array column
+	//   "pointer_slice"        — pointer-to-slice for nullable array columns,
+	//                            distinguishing SQL NULL from '{}'
+	// Has no effect in "sqltypes" NullableTypes mode, which always uses the
+	// SqlXxxArray wrapper types.
+	NullableArrays string
+
 	// Prisma7 enables Prisma 7-specific output for Prisma writers.
 	Prisma7 bool
 

test_data/asset-smoke/1_010_templates/assets.yaml

@@ -0,0 +1,6 @@
+- file: hello.md
+  call: |
+    INSERT INTO docs (name, content)
+    VALUES (:filename, :bytes::text)
+- file: logo.png
+  call: UPDATE branding SET logo = :bytes WHERE id = 1

test_data/asset-smoke/1_010_templates/hello.md

@@ -0,0 +1 @@
+# Hello World

test_data/asset-smoke/1_010_templates/logo.png

@@ -0,0 +1 @@
+PNG_PLACEHOLDER

test_data/asset-smoke/2_001_branding/assets.yaml

@@ -0,0 +1,4 @@
+- file: banner.txt
+  call: INSERT INTO banners (data) VALUES (:bytes)
+  params:
+    owner_id: "1"

test_data/asset-smoke/2_001_branding/banner.txt

@@ -0,0 +1 @@
+BANNER CONTENT

vendor/github.com/jackc/pgx/v5/pgxpool/batch_results.go

@@ -0,0 +1,52 @@
+package pgxpool
+
+import (
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+type errBatchResults struct {
+	err error
+}
+
+func (br errBatchResults) Exec() (pgconn.CommandTag, error) {
+	return pgconn.CommandTag{}, br.err
+}
+
+func (br errBatchResults) Query() (pgx.Rows, error) {
+	return errRows{err: br.err}, br.err
+}
+
+func (br errBatchResults) QueryRow() pgx.Row {
+	return errRow{err: br.err}
+}
+
+func (br errBatchResults) Close() error {
+	return br.err
+}
+
+type poolBatchResults struct {
+	br pgx.BatchResults
+	c  *Conn
+}
+
+func (br *poolBatchResults) Exec() (pgconn.CommandTag, error) {
+	return br.br.Exec()
+}
+
+func (br *poolBatchResults) Query() (pgx.Rows, error) {
+	return br.br.Query()
+}
+
+func (br *poolBatchResults) QueryRow() pgx.Row {
+	return br.br.QueryRow()
+}
+
+func (br *poolBatchResults) Close() error {
+	err := br.br.Close()
+	if br.c != nil {
+		br.c.Release()
+		br.c = nil
+	}
+	return err
+}

vendor/github.com/jackc/pgx/v5/pgxpool/conn.go

@@ -0,0 +1,134 @@
+package pgxpool
+
+import (
+	"context"
+	"sync/atomic"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+	"github.com/jackc/puddle/v2"
+)
+
+// Conn is an acquired *pgx.Conn from a Pool.
+type Conn struct {
+	res *puddle.Resource[*connResource]
+	p   *Pool
+}
+
+// Release returns c to the pool it was acquired from. Once Release has been called, other methods must not be called.
+// However, it is safe to call Release multiple times. Subsequent calls after the first will be ignored.
+func (c *Conn) Release() {
+	if c.res == nil {
+		return
+	}
+
+	conn := c.Conn()
+	res := c.res
+	c.res = nil
+
+	if c.p.releaseTracer != nil {
+		c.p.releaseTracer.TraceRelease(c.p, TraceReleaseData{Conn: conn})
+	}
+
+	if conn.IsClosed() || conn.PgConn().IsBusy() || conn.PgConn().TxStatus() != 'I' {
+		res.Destroy()
+		// Signal to the health check to run since we just destroyed a connections
+		// and we might be below minConns now
+		c.p.triggerHealthCheck()
+		return
+	}
+
+	// If the pool is consistently being used, we might never get to check the
+	// lifetime of a connection since we only check idle connections in checkConnsHealth
+	// so we also check the lifetime here and force a health check
+	if c.p.isExpired(res) {
+		atomic.AddInt64(&c.p.lifetimeDestroyCount, 1)
+		res.Destroy()
+		// Signal to the health check to run since we just destroyed a connections
+		// and we might be below minConns now
+		c.p.triggerHealthCheck()
+		return
+	}
+
+	if c.p.afterRelease == nil {
+		res.Release()
+		return
+	}
+
+	go func() {
+		if c.p.afterRelease(conn) {
+			res.Release()
+		} else {
+			res.Destroy()
+			// Signal to the health check to run since we just destroyed a connections
+			// and we might be below minConns now
+			c.p.triggerHealthCheck()
+		}
+	}()
+}
+
+// Hijack assumes ownership of the connection from the pool. Caller is responsible for closing the connection. Hijack
+// will panic if called on an already released or hijacked connection.
+func (c *Conn) Hijack() *pgx.Conn {
+	if c.res == nil {
+		panic("cannot hijack already released or hijacked connection")
+	}
+
+	conn := c.Conn()
+	res := c.res
+	c.res = nil
+
+	res.Hijack()
+
+	return conn
+}
+
+func (c *Conn) Exec(ctx context.Context, sql string, arguments ...any) (pgconn.CommandTag, error) {
+	return c.Conn().Exec(ctx, sql, arguments...)
+}
+
+func (c *Conn) Query(ctx context.Context, sql string, args ...any) (pgx.Rows, error) {
+	return c.Conn().Query(ctx, sql, args...)
+}
+
+func (c *Conn) QueryRow(ctx context.Context, sql string, args ...any) pgx.Row {
+	return c.Conn().QueryRow(ctx, sql, args...)
+}
+
+func (c *Conn) SendBatch(ctx context.Context, b *pgx.Batch) pgx.BatchResults {
+	return c.Conn().SendBatch(ctx, b)
+}
+
+func (c *Conn) CopyFrom(ctx context.Context, tableName pgx.Identifier, columnNames []string, rowSrc pgx.CopyFromSource) (int64, error) {
+	return c.Conn().CopyFrom(ctx, tableName, columnNames, rowSrc)
+}
+
+// Begin starts a transaction block from the *Conn without explicitly setting a transaction mode (see BeginTx with TxOptions if transaction mode is required).
+func (c *Conn) Begin(ctx context.Context) (pgx.Tx, error) {
+	return c.Conn().Begin(ctx)
+}
+
+// BeginTx starts a transaction block from the *Conn with txOptions determining the transaction mode.
+func (c *Conn) BeginTx(ctx context.Context, txOptions pgx.TxOptions) (pgx.Tx, error) {
+	return c.Conn().BeginTx(ctx, txOptions)
+}
+
+func (c *Conn) Ping(ctx context.Context) error {
+	return c.Conn().Ping(ctx)
+}
+
+func (c *Conn) Conn() *pgx.Conn {
+	return c.connResource().conn
+}
+
+func (c *Conn) connResource() *connResource {
+	return c.res.Value()
+}
+
+func (c *Conn) getPoolRow(r pgx.Row) *poolRow {
+	return c.connResource().getPoolRow(c, r)
+}
+
+func (c *Conn) getPoolRows(r pgx.Rows) *poolRows {
+	return c.connResource().getPoolRows(c, r)
+}

vendor/github.com/jackc/pgx/v5/pgxpool/doc.go

@@ -0,0 +1,27 @@
+// Package pgxpool is a concurrency-safe connection pool for pgx.
+/*
+pgxpool implements a nearly identical interface to pgx connections.
+
+Creating a Pool
+
+The primary way of creating a pool is with [pgxpool.New]:
+
+    pool, err := pgxpool.New(context.Background(), os.Getenv("DATABASE_URL"))
+
+The database connection string can be in URL or keyword/value format. PostgreSQL settings, pgx settings, and pool settings can be
+specified here. In addition, a config struct can be created by [ParseConfig].
+
+    config, err := pgxpool.ParseConfig(os.Getenv("DATABASE_URL"))
+    if err != nil {
+        // ...
+    }
+    config.AfterConnect = func(ctx context.Context, conn *pgx.Conn) error {
+        // do something with every new connection
+    }
+
+    pool, err := pgxpool.NewWithConfig(context.Background(), config)
+
+A pool returns without waiting for any connections to be established. Acquire a connection immediately after creating
+the pool to check if a connection can successfully be established.
+*/
+package pgxpool

vendor/github.com/jackc/pgx/v5/pgxpool/pool.go

@@ -0,0 +1,832 @@
+package pgxpool
+
+import (
+	"context"
+	"errors"
+	"math/rand/v2"
+	"runtime"
+	"strconv"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+	"github.com/jackc/puddle/v2"
+)
+
+var (
+	defaultMaxConns          = int32(4)
+	defaultMinConns          = int32(0)
+	defaultMinIdleConns      = int32(0)
+	defaultMaxConnLifetime   = time.Hour
+	defaultMaxConnIdleTime   = time.Minute * 30
+	defaultHealthCheckPeriod = time.Minute
+)
+
+type connResource struct {
+	conn       *pgx.Conn
+	conns      []Conn
+	poolRows   []poolRow
+	poolRowss  []poolRows
+	maxAgeTime time.Time
+}
+
+func (cr *connResource) getConn(p *Pool, res *puddle.Resource[*connResource]) *Conn {
+	if len(cr.conns) == 0 {
+		cr.conns = make([]Conn, 128)
+	}
+
+	c := &cr.conns[len(cr.conns)-1]
+	cr.conns = cr.conns[0 : len(cr.conns)-1]
+
+	c.res = res
+	c.p = p
+
+	return c
+}
+
+func (cr *connResource) getPoolRow(c *Conn, r pgx.Row) *poolRow {
+	if len(cr.poolRows) == 0 {
+		cr.poolRows = make([]poolRow, 128)
+	}
+
+	pr := &cr.poolRows[len(cr.poolRows)-1]
+	cr.poolRows = cr.poolRows[0 : len(cr.poolRows)-1]
+
+	pr.c = c
+	pr.r = r
+
+	return pr
+}
+
+func (cr *connResource) getPoolRows(c *Conn, r pgx.Rows) *poolRows {
+	if len(cr.poolRowss) == 0 {
+		cr.poolRowss = make([]poolRows, 128)
+	}
+
+	pr := &cr.poolRowss[len(cr.poolRowss)-1]
+	cr.poolRowss = cr.poolRowss[0 : len(cr.poolRowss)-1]
+
+	pr.c = c
+	pr.r = r
+
+	return pr
+}
+
+// Pool allows for connection reuse.
+type Pool struct {
+	// 64 bit fields accessed with atomics must be at beginning of struct to guarantee alignment for certain 32-bit
+	// architectures. See BUGS section of https://pkg.go.dev/sync/atomic and https://github.com/jackc/pgx/issues/1288.
+	newConnsCount        int64
+	lifetimeDestroyCount int64
+	idleDestroyCount     int64
+
+	p                     *puddle.Pool[*connResource]
+	config                *Config
+	beforeConnect         func(context.Context, *pgx.ConnConfig) error
+	afterConnect          func(context.Context, *pgx.Conn) error
+	prepareConn           func(context.Context, *pgx.Conn) (bool, error)
+	afterRelease          func(*pgx.Conn) bool
+	beforeClose           func(*pgx.Conn)
+	shouldPing            func(context.Context, ShouldPingParams) bool
+	minConns              int32
+	minIdleConns          int32
+	maxConns              int32
+	maxConnLifetime       time.Duration
+	maxConnLifetimeJitter time.Duration
+	maxConnIdleTime       time.Duration
+	healthCheckPeriod     time.Duration
+	pingTimeout           time.Duration
+
+	healthCheckMu    sync.Mutex
+	healthCheckTimer *time.Timer
+
+	healthCheckChan chan struct{}
+
+	acquireTracer AcquireTracer
+	releaseTracer ReleaseTracer
+
+	closeOnce sync.Once
+	closeChan chan struct{}
+}
+
+// ShouldPingParams are the parameters passed to ShouldPing.
+type ShouldPingParams struct {
+	Conn         *pgx.Conn
+	IdleDuration time.Duration
+}
+
+// Config is the configuration struct for creating a pool. It must be created by [ParseConfig] and then it can be
+// modified.
+type Config struct {
+	ConnConfig *pgx.ConnConfig
+
+	// BeforeConnect is called before a new connection is made. It is passed a copy of the underlying [pgx.ConnConfig] and
+	// will not impact any existing open connections.
+	BeforeConnect func(context.Context, *pgx.ConnConfig) error
+
+	// AfterConnect is called after a connection is established, but before it is added to the pool.
+	AfterConnect func(context.Context, *pgx.Conn) error
+
+	// BeforeAcquire is called before a connection is acquired from the pool. It must return true to allow the
+	// acquisition or false to indicate that the connection should be destroyed and a different connection should be
+	// acquired.
+	//
+	// Deprecated: Use PrepareConn instead. If both PrepareConn and BeforeAcquire are set, PrepareConn will take
+	// precedence, ignoring BeforeAcquire.
+	BeforeAcquire func(context.Context, *pgx.Conn) bool
+
+	// PrepareConn is called before a connection is acquired from the pool. If this function returns true, the connection
+	// is considered valid, otherwise the connection is destroyed. If the function returns a non-nil error, the instigating
+	// query will fail with the returned error.
+	//
+	// Specifically, this means that:
+	//
+	// 	- If it returns true and a nil error, the query proceeds as normal.
+	// 	- If it returns true and an error, the connection will be returned to the pool, and the instigating query will fail with the returned error.
+	// 	- If it returns false, and an error, the connection will be destroyed, and the query will fail with the returned error.
+	// 	- If it returns false and a nil error, the connection will be destroyed, and the instigating query will be retried on a new connection.
+	PrepareConn func(context.Context, *pgx.Conn) (bool, error)
+
+	// AfterRelease is called after a connection is released, but before it is returned to the pool. It must return true to
+	// return the connection to the pool or false to destroy the connection.
+	AfterRelease func(*pgx.Conn) bool
+
+	// BeforeClose is called right before a connection is closed and removed from the pool.
+	BeforeClose func(*pgx.Conn)
+
+	// ShouldPing is called after a connection is acquired from the pool. If it returns true, the connection is pinged to check for liveness.
+	// If this func is not set, the default behavior is to ping connections that have been idle for at least 1 second.
+	ShouldPing func(context.Context, ShouldPingParams) bool
+
+	// MaxConnLifetime is the duration since creation after which a connection will be automatically closed.
+	MaxConnLifetime time.Duration
+
+	// MaxConnLifetimeJitter is the duration after MaxConnLifetime to randomly decide to close a connection.
+	// This helps prevent all connections from being closed at the exact same time, starving the pool.
+	MaxConnLifetimeJitter time.Duration
+
+	// MaxConnIdleTime is the duration after which an idle connection will be automatically closed by the health check.
+	MaxConnIdleTime time.Duration
+
+	// PingTimeout is the maximum amount of time to wait for a connection to pong before considering it as unhealthy and
+	// destroying it. If zero, the default is no timeout.
+	PingTimeout time.Duration
+
+	// MaxConns is the maximum size of the pool. The default is the greater of 4 or runtime.NumCPU().
+	MaxConns int32
+
+	// MinConns is the minimum size of the pool. After connection closes, the pool might dip below MinConns. A low
+	// number of MinConns might mean the pool is empty after MaxConnLifetime until the health check has a chance
+	// to create new connections.
+	MinConns int32
+
+	// MinIdleConns is the minimum number of idle connections in the pool. You can increase this to ensure that
+	// there are always idle connections available. This can help reduce tail latencies during request processing,
+	// as you can avoid the latency of establishing a new connection while handling requests. It is superior
+	// to MinConns for this purpose.
+	// Similar to MinConns, the pool might temporarily dip below MinIdleConns after connection closes.
+	MinIdleConns int32
+
+	// HealthCheckPeriod is the duration between checks of the health of idle connections.
+	HealthCheckPeriod time.Duration
+
+	createdByParseConfig bool // Used to enforce created by ParseConfig rule.
+}
+
+// Copy returns a deep copy of the config that is safe to use and modify.
+// The only exception is the tls.Config:
+// according to the tls.Config docs it must not be modified after creation.
+func (c *Config) Copy() *Config {
+	newConfig := new(Config)
+	*newConfig = *c
+	newConfig.ConnConfig = c.ConnConfig.Copy()
+	return newConfig
+}
+
+// ConnString returns the connection string as parsed by pgxpool.ParseConfig into pgxpool.Config.
+func (c *Config) ConnString() string { return c.ConnConfig.ConnString() }
+
+// New creates a new Pool. See [ParseConfig] for information on connString format.
+func New(ctx context.Context, connString string) (*Pool, error) {
+	config, err := ParseConfig(connString)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewWithConfig(ctx, config)
+}
+
+// NewWithConfig creates a new [Pool]. config must have been created by [ParseConfig].
+func NewWithConfig(ctx context.Context, config *Config) (*Pool, error) {
+	// Default values are set in ParseConfig. Enforce initial creation by ParseConfig rather than setting defaults from
+	// zero values.
+	if !config.createdByParseConfig {
+		panic("config must be created by ParseConfig")
+	}
+
+	prepareConn := config.PrepareConn
+	if prepareConn == nil && config.BeforeAcquire != nil {
+		prepareConn = func(ctx context.Context, conn *pgx.Conn) (bool, error) {
+			return config.BeforeAcquire(ctx, conn), nil
+		}
+	}
+
+	p := &Pool{
+		config:                config,
+		beforeConnect:         config.BeforeConnect,
+		afterConnect:          config.AfterConnect,
+		prepareConn:           prepareConn,
+		afterRelease:          config.AfterRelease,
+		beforeClose:           config.BeforeClose,
+		minConns:              config.MinConns,
+		minIdleConns:          config.MinIdleConns,
+		maxConns:              config.MaxConns,
+		maxConnLifetime:       config.MaxConnLifetime,
+		maxConnLifetimeJitter: config.MaxConnLifetimeJitter,
+		maxConnIdleTime:       config.MaxConnIdleTime,
+		pingTimeout:           config.PingTimeout,
+		healthCheckPeriod:     config.HealthCheckPeriod,
+		healthCheckChan:       make(chan struct{}, 1),
+		closeChan:             make(chan struct{}),
+	}
+
+	if t, ok := config.ConnConfig.Tracer.(AcquireTracer); ok {
+		p.acquireTracer = t
+	}
+
+	if t, ok := config.ConnConfig.Tracer.(ReleaseTracer); ok {
+		p.releaseTracer = t
+	}
+
+	if config.ShouldPing != nil {
+		p.shouldPing = config.ShouldPing
+	} else {
+		p.shouldPing = func(ctx context.Context, params ShouldPingParams) bool {
+			return params.IdleDuration > time.Second
+		}
+	}
+
+	var err error
+	p.p, err = puddle.NewPool(
+		&puddle.Config[*connResource]{
+			Constructor: func(ctx context.Context) (*connResource, error) {
+				atomic.AddInt64(&p.newConnsCount, 1)
+				connConfig := p.config.ConnConfig.Copy()
+
+				// Connection will continue in background even if Acquire is canceled. Ensure that a connect won't hang forever.
+				if connConfig.ConnectTimeout <= 0 {
+					connConfig.ConnectTimeout = 2 * time.Minute
+				}
+
+				if p.beforeConnect != nil {
+					if err := p.beforeConnect(ctx, connConfig); err != nil {
+						return nil, err
+					}
+				}
+
+				conn, err := pgx.ConnectConfig(ctx, connConfig)
+				if err != nil {
+					return nil, err
+				}
+
+				if p.afterConnect != nil {
+					err = p.afterConnect(ctx, conn)
+					if err != nil {
+						conn.Close(ctx)
+						return nil, err
+					}
+				}
+
+				jitterSecs := rand.Float64() * config.MaxConnLifetimeJitter.Seconds()
+				maxAgeTime := time.Now().Add(config.MaxConnLifetime).Add(time.Duration(jitterSecs) * time.Second)
+
+				cr := &connResource{
+					conn:       conn,
+					conns:      make([]Conn, 64),
+					poolRows:   make([]poolRow, 64),
+					poolRowss:  make([]poolRows, 64),
+					maxAgeTime: maxAgeTime,
+				}
+
+				return cr, nil
+			},
+			Destructor: func(value *connResource) {
+				ctx, cancel := context.WithTimeout(context.Background(), 15*time.Second)
+				conn := value.conn
+				if p.beforeClose != nil {
+					p.beforeClose(conn)
+				}
+				conn.Close(ctx)
+				select {
+				case <-conn.PgConn().CleanupDone():
+				case <-ctx.Done():
+				}
+				cancel()
+			},
+			MaxSize: config.MaxConns,
+		},
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	go func() {
+		targetIdleResources := max(int(p.minConns), int(p.minIdleConns))
+		p.createIdleResources(ctx, targetIdleResources)
+		p.backgroundHealthCheck()
+	}()
+
+	return p, nil
+}
+
+// ParseConfig builds a Config from connString. It parses connString with the same behavior as [pgx.ParseConfig] with the
+// addition of the following variables:
+//
+//   - pool_max_conns: integer greater than 0 (default 4)
+//   - pool_min_conns: integer 0 or greater (default 0)
+//   - pool_max_conn_lifetime: duration string (default 1 hour)
+//   - pool_max_conn_idle_time: duration string (default 30 minutes)
+//   - pool_health_check_period: duration string (default 1 minute)
+//   - pool_max_conn_lifetime_jitter: duration string (default 0)
+//
+// See Config for definitions of these arguments.
+//
+//	# Example Keyword/Value
+//	user=jack password=secret host=pg.example.com port=5432 dbname=mydb sslmode=verify-ca pool_max_conns=10 pool_max_conn_lifetime=1h30m
+//
+//	# Example URL
+//	postgres://jack:secret@pg.example.com:5432/mydb?sslmode=verify-ca&pool_max_conns=10&pool_max_conn_lifetime=1h30m
+func ParseConfig(connString string) (*Config, error) {
+	connConfig, err := pgx.ParseConfig(connString)
+	if err != nil {
+		return nil, err
+	}
+
+	config := &Config{
+		ConnConfig:           connConfig,
+		createdByParseConfig: true,
+	}
+
+	if s, ok := config.ConnConfig.Config.RuntimeParams["pool_max_conns"]; ok {
+		delete(connConfig.Config.RuntimeParams, "pool_max_conns")
+		n, err := strconv.ParseInt(s, 10, 32)
+		if err != nil {
+			return nil, pgconn.NewParseConfigError(connString, "cannot parse pool_max_conns", err)
+		}
+		if n < 1 {
+			return nil, pgconn.NewParseConfigError(connString, "pool_max_conns too small", err)
+		}
+		config.MaxConns = int32(n)
+	} else {
+		config.MaxConns = defaultMaxConns
+		if numCPU := int32(runtime.NumCPU()); numCPU > config.MaxConns {
+			config.MaxConns = numCPU
+		}
+	}
+
+	if s, ok := config.ConnConfig.Config.RuntimeParams["pool_min_conns"]; ok {
+		delete(connConfig.Config.RuntimeParams, "pool_min_conns")
+		n, err := strconv.ParseInt(s, 10, 32)
+		if err != nil {
+			return nil, pgconn.NewParseConfigError(connString, "cannot parse pool_min_conns", err)
+		}
+		config.MinConns = int32(n)
+	} else {
+		config.MinConns = defaultMinConns
+	}
+
+	if s, ok := config.ConnConfig.Config.RuntimeParams["pool_min_idle_conns"]; ok {
+		delete(connConfig.Config.RuntimeParams, "pool_min_idle_conns")
+		n, err := strconv.ParseInt(s, 10, 32)
+		if err != nil {
+			return nil, pgconn.NewParseConfigError(connString, "cannot parse pool_min_idle_conns", err)
+		}
+		config.MinIdleConns = int32(n)
+	} else {
+		config.MinIdleConns = defaultMinIdleConns
+	}
+
+	if s, ok := config.ConnConfig.Config.RuntimeParams["pool_max_conn_lifetime"]; ok {
+		delete(connConfig.Config.RuntimeParams, "pool_max_conn_lifetime")
+		d, err := time.ParseDuration(s)
+		if err != nil {
+			return nil, pgconn.NewParseConfigError(connString, "cannot parse pool_max_conn_lifetime", err)
+		}
+		config.MaxConnLifetime = d
+	} else {
+		config.MaxConnLifetime = defaultMaxConnLifetime
+	}
+
+	if s, ok := config.ConnConfig.Config.RuntimeParams["pool_max_conn_idle_time"]; ok {
+		delete(connConfig.Config.RuntimeParams, "pool_max_conn_idle_time")
+		d, err := time.ParseDuration(s)
+		if err != nil {
+			return nil, pgconn.NewParseConfigError(connString, "cannot parse pool_max_conn_idle_time", err)
+		}
+		config.MaxConnIdleTime = d
+	} else {
+		config.MaxConnIdleTime = defaultMaxConnIdleTime
+	}
+
+	if s, ok := config.ConnConfig.Config.RuntimeParams["pool_health_check_period"]; ok {
+		delete(connConfig.Config.RuntimeParams, "pool_health_check_period")
+		d, err := time.ParseDuration(s)
+		if err != nil {
+			return nil, pgconn.NewParseConfigError(connString, "cannot parse pool_health_check_period", err)
+		}
+		config.HealthCheckPeriod = d
+	} else {
+		config.HealthCheckPeriod = defaultHealthCheckPeriod
+	}
+
+	if s, ok := config.ConnConfig.Config.RuntimeParams["pool_max_conn_lifetime_jitter"]; ok {
+		delete(connConfig.Config.RuntimeParams, "pool_max_conn_lifetime_jitter")
+		d, err := time.ParseDuration(s)
+		if err != nil {
+			return nil, pgconn.NewParseConfigError(connString, "cannot parse pool_max_conn_lifetime_jitter", err)
+		}
+		config.MaxConnLifetimeJitter = d
+	}
+
+	return config, nil
+}
+
+// Close closes all connections in the pool and rejects future [Pool.Acquire] calls. Blocks until all connections are returned
+// to pool and closed.
+func (p *Pool) Close() {
+	p.closeOnce.Do(func() {
+		close(p.closeChan)
+		p.p.Close()
+	})
+}
+
+func (p *Pool) isExpired(res *puddle.Resource[*connResource]) bool {
+	return time.Now().After(res.Value().maxAgeTime)
+}
+
+func (p *Pool) triggerHealthCheck() {
+	const healthCheckDelay = 500 * time.Millisecond
+
+	p.healthCheckMu.Lock()
+	defer p.healthCheckMu.Unlock()
+
+	if p.healthCheckTimer == nil {
+		// Destroy is asynchronous so we give it time to actually remove itself from
+		// the pool otherwise we might try to check the pool size too soon
+		p.healthCheckTimer = time.AfterFunc(healthCheckDelay, func() {
+			select {
+			case <-p.closeChan:
+			case p.healthCheckChan <- struct{}{}:
+			default:
+			}
+		})
+		return
+	}
+
+	p.healthCheckTimer.Reset(healthCheckDelay)
+}
+
+func (p *Pool) backgroundHealthCheck() {
+	ticker := time.NewTicker(p.healthCheckPeriod)
+	defer ticker.Stop()
+	for {
+		select {
+		case <-p.closeChan:
+			return
+		case <-p.healthCheckChan:
+			p.checkHealth()
+		case <-ticker.C:
+			p.checkHealth()
+		}
+	}
+}
+
+func (p *Pool) checkHealth() {
+	for {
+		// If checkMinConns failed we don't destroy any connections since we couldn't
+		// even get to minConns
+		if err := p.checkMinConns(); err != nil {
+			// Should we log this error somewhere?
+			break
+		}
+		if !p.checkConnsHealth() {
+			// Since we didn't destroy any connections we can stop looping
+			break
+		}
+		// Technically Destroy is asynchronous but 500ms should be enough for it to
+		// remove it from the underlying pool
+		select {
+		case <-p.closeChan:
+			return
+		case <-time.After(500 * time.Millisecond):
+		}
+	}
+}
+
+// checkConnsHealth will check all idle connections, destroy a connection if
+// it's idle or too old, and returns true if any were destroyed
+func (p *Pool) checkConnsHealth() bool {
+	var destroyed bool
+	totalConns := p.Stat().TotalConns()
+	resources := p.p.AcquireAllIdle()
+	for _, res := range resources {
+		// We're okay going under minConns if the lifetime is up
+		if p.isExpired(res) && totalConns >= p.minConns {
+			atomic.AddInt64(&p.lifetimeDestroyCount, 1)
+			res.Destroy()
+			destroyed = true
+			// Since Destroy is async we manually decrement totalConns.
+			totalConns--
+		} else if res.IdleDuration() > p.maxConnIdleTime && totalConns > p.minConns {
+			atomic.AddInt64(&p.idleDestroyCount, 1)
+			res.Destroy()
+			destroyed = true
+			// Since Destroy is async we manually decrement totalConns.
+			totalConns--
+		} else {
+			res.ReleaseUnused()
+		}
+	}
+	return destroyed
+}
+
+func (p *Pool) checkMinConns() error {
+	// TotalConns can include ones that are being destroyed but we should have
+	// sleep(500ms) around all of the destroys to help prevent that from throwing
+	// off this check
+
+	// Create the number of connections needed to get to both minConns and minIdleConns
+	stat := p.Stat()
+	toCreate := max(p.minConns-stat.TotalConns(), p.minIdleConns-stat.IdleConns())
+	if toCreate > 0 {
+		return p.createIdleResources(context.Background(), int(toCreate))
+	}
+	return nil
+}
+
+func (p *Pool) createIdleResources(parentCtx context.Context, targetResources int) error {
+	ctx, cancel := context.WithCancel(parentCtx)
+	defer cancel()
+
+	errs := make(chan error, targetResources)
+
+	for range targetResources {
+		go func() {
+			err := p.p.CreateResource(ctx)
+			// Ignore ErrNotAvailable since it means that the pool has become full since we started creating resource.
+			if err == puddle.ErrNotAvailable {
+				err = nil
+			}
+			errs <- err
+		}()
+	}
+
+	var firstError error
+	for range targetResources {
+		err := <-errs
+		if err != nil && firstError == nil {
+			cancel()
+			firstError = err
+		}
+	}
+
+	return firstError
+}
+
+// Acquire returns a connection ([Conn]) from the [Pool].
+func (p *Pool) Acquire(ctx context.Context) (c *Conn, err error) {
+	if p.acquireTracer != nil {
+		ctx = p.acquireTracer.TraceAcquireStart(ctx, p, TraceAcquireStartData{})
+		defer func() {
+			var conn *pgx.Conn
+			if c != nil {
+				conn = c.Conn()
+			}
+			p.acquireTracer.TraceAcquireEnd(ctx, p, TraceAcquireEndData{Conn: conn, Err: err})
+		}()
+	}
+
+	// Try to acquire from the connection pool up to maxConns + 1 times, so that
+	// any that fatal errors would empty the pool and still at least try 1 fresh
+	// connection.
+	for range int(p.maxConns) + 1 {
+		res, err := p.p.Acquire(ctx)
+		if err != nil {
+			return nil, err
+		}
+
+		cr := res.Value()
+
+		shouldPingParams := ShouldPingParams{Conn: cr.conn, IdleDuration: res.IdleDuration()}
+		if p.shouldPing(ctx, shouldPingParams) {
+			err := func() error {
+				pingCtx := ctx
+				if p.pingTimeout > 0 {
+					var cancel context.CancelFunc
+					pingCtx, cancel = context.WithTimeout(ctx, p.pingTimeout)
+					defer cancel()
+				}
+				return cr.conn.Ping(pingCtx)
+			}()
+			if err != nil {
+				res.Destroy()
+				continue
+			}
+		}
+
+		if p.prepareConn != nil {
+			ok, err := p.prepareConn(ctx, cr.conn)
+			if !ok {
+				res.Destroy()
+			}
+			if err != nil {
+				if ok {
+					res.Release()
+				}
+				return nil, err
+			}
+			if !ok {
+				continue
+			}
+		}
+
+		return cr.getConn(p, res), nil
+	}
+	return nil, errors.New("pgxpool: too many failed attempts acquiring connection; likely bug in PrepareConn, BeforeAcquire, or ShouldPing hook")
+}
+
+// AcquireFunc acquires a [Conn] and calls f with that [Conn]. ctx will only affect the [Pool.Acquire]. It has no effect on the
+// call of f. The return value is either an error acquiring the [Conn] or the return value of f. The [Conn] is
+// automatically released after the call of f.
+func (p *Pool) AcquireFunc(ctx context.Context, f func(*Conn) error) error {
+	conn, err := p.Acquire(ctx)
+	if err != nil {
+		return err
+	}
+	defer conn.Release()
+
+	return f(conn)
+}
+
+// AcquireAllIdle atomically acquires all currently idle connections. Its intended use is for health check and
+// keep-alive functionality. It does not update pool statistics.
+func (p *Pool) AcquireAllIdle(ctx context.Context) []*Conn {
+	resources := p.p.AcquireAllIdle()
+	conns := make([]*Conn, 0, len(resources))
+	for _, res := range resources {
+		cr := res.Value()
+		if p.prepareConn != nil {
+			ok, err := p.prepareConn(ctx, cr.conn)
+			if !ok || err != nil {
+				res.Destroy()
+				continue
+			}
+		}
+		conns = append(conns, cr.getConn(p, res))
+	}
+
+	return conns
+}
+
+// Reset closes all connections, but leaves the pool open. It is intended for use when an error is detected that would
+// disrupt all connections (such as a network interruption or a server state change).
+//
+// It is safe to reset a pool while connections are checked out. Those connections will be closed when they are returned
+// to the pool.
+func (p *Pool) Reset() {
+	p.p.Reset()
+}
+
+// Config returns a copy of config that was used to initialize this [Pool].
+func (p *Pool) Config() *Config { return p.config.Copy() }
+
+// Stat returns a pgxpool.Stat struct with a snapshot of Pool statistics.
+func (p *Pool) Stat() *Stat {
+	return &Stat{
+		s:                    p.p.Stat(),
+		newConnsCount:        atomic.LoadInt64(&p.newConnsCount),
+		lifetimeDestroyCount: atomic.LoadInt64(&p.lifetimeDestroyCount),
+		idleDestroyCount:     atomic.LoadInt64(&p.idleDestroyCount),
+	}
+}
+
+// Exec acquires a connection from the [Pool] and executes the given SQL.
+// SQL can be either a prepared statement name or an SQL string.
+// Arguments should be referenced positionally from the SQL string as $1, $2, etc.
+// The acquired connection is returned to the pool when the [Pool.Exec] function returns.
+func (p *Pool) Exec(ctx context.Context, sql string, arguments ...any) (pgconn.CommandTag, error) {
+	c, err := p.Acquire(ctx)
+	if err != nil {
+		return pgconn.CommandTag{}, err
+	}
+	defer c.Release()
+
+	return c.Exec(ctx, sql, arguments...)
+}
+
+// Query acquires a connection and executes a query that returns [pgx.Rows].
+// Arguments should be referenced positionally from the SQL string as $1, $2, etc.
+// See [pgx.Rows] documentation to close the returned [pgx.Rows] and return the acquired connection to the [Pool].
+//
+// If there is an error, the returned [pgx.Rows] will be returned in an error state.
+// If preferred, ignore the error returned from [Pool.Query] and handle errors using the returned [pgx.Rows].
+//
+// For extra control over how the query is executed, the types [pgx.QueryExecMode], [pgx.QueryResultFormats], and
+// [pgx.QueryResultFormatsByOID] may be used as the first args to control exactly how the query is executed. This is rarely
+// needed. See the documentation for those types for details.
+func (p *Pool) Query(ctx context.Context, sql string, args ...any) (pgx.Rows, error) {
+	c, err := p.Acquire(ctx)
+	if err != nil {
+		return errRows{err: err}, err
+	}
+
+	rows, err := c.Query(ctx, sql, args...)
+	if err != nil {
+		c.Release()
+		return errRows{err: err}, err
+	}
+
+	return c.getPoolRows(rows), nil
+}
+
+// QueryRow acquires a connection and executes a query that is expected
+// to return at most one row ([pgx.Row]). Errors are deferred until [pgx.Row]'s
+// Scan method is called. If the query selects no rows, [pgx.Row]'s Scan will
+// return [pgx.ErrNoRows]. Otherwise, [pgx.Row]'s Scan scans the first selected row
+// and discards the rest. The acquired connection is returned to the [Pool] when
+// [pgx.Row]'s Scan method is called.
+//
+// Arguments should be referenced positionally from the SQL string as $1, $2, etc.
+//
+// For extra control over how the query is executed, the types [pgx.QueryExecMode], [pgx.QueryResultFormats], and
+// [pgx.QueryResultFormatsByOID] may be used as the first args to control exactly how the query is executed. This is rarely
+// needed. See the documentation for those types for details.
+func (p *Pool) QueryRow(ctx context.Context, sql string, args ...any) pgx.Row {
+	c, err := p.Acquire(ctx)
+	if err != nil {
+		return errRow{err: err}
+	}
+
+	row := c.QueryRow(ctx, sql, args...)
+	return c.getPoolRow(row)
+}
+
+func (p *Pool) SendBatch(ctx context.Context, b *pgx.Batch) pgx.BatchResults {
+	c, err := p.Acquire(ctx)
+	if err != nil {
+		return errBatchResults{err: err}
+	}
+
+	br := c.SendBatch(ctx, b)
+	return &poolBatchResults{br: br, c: c}
+}
+
+// Begin acquires a connection from the [Pool] and starts a transaction. Unlike [database/sql], the context only affects the begin command. i.e. there is no
+// auto-rollback on context cancellation. Begin initiates a transaction block without explicitly setting a transaction mode for the block (see [Pool.BeginTx] with [pgx.TxOptions] if transaction mode is required).
+// [*Tx] is returned, which implements the [pgx.Tx] interface.
+// [Tx.Commit] or [Tx.Rollback] must be called on the returned transaction to finalize the transaction block.
+func (p *Pool) Begin(ctx context.Context) (pgx.Tx, error) {
+	return p.BeginTx(ctx, pgx.TxOptions{})
+}
+
+// BeginTx acquires a connection from the [Pool] and starts a transaction with [pgx.TxOptions] determining the transaction mode.
+// Unlike [database/sql], the context only affects the begin command. i.e. there is no auto-rollback on context cancellation.
+// [*Tx] is returned, which implements the [pgx.Tx] interface.
+// [Tx.Commit] or [Tx.Rollback] must be called on the returned transaction to finalize the transaction block.
+func (p *Pool) BeginTx(ctx context.Context, txOptions pgx.TxOptions) (pgx.Tx, error) {
+	c, err := p.Acquire(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	t, err := c.BeginTx(ctx, txOptions)
+	if err != nil {
+		c.Release()
+		return nil, err
+	}
+
+	return &Tx{t: t, c: c}, nil
+}
+
+func (p *Pool) CopyFrom(ctx context.Context, tableName pgx.Identifier, columnNames []string, rowSrc pgx.CopyFromSource) (int64, error) {
+	c, err := p.Acquire(ctx)
+	if err != nil {
+		return 0, err
+	}
+	defer c.Release()
+
+	return c.Conn().CopyFrom(ctx, tableName, columnNames, rowSrc)
+}
+
+// Ping acquires a connection from the [Pool] and executes an empty sql statement against it.
+// If the sql returns without error, the database [Pool.Ping] is considered successful, otherwise, the error is returned.
+func (p *Pool) Ping(ctx context.Context) error {
+	c, err := p.Acquire(ctx)
+	if err != nil {
+		return err
+	}
+	defer c.Release()
+	return c.Ping(ctx)
+}

vendor/github.com/jackc/pgx/v5/pgxpool/rows.go

@@ -0,0 +1,116 @@
+package pgxpool
+
+import (
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+type errRows struct {
+	err error
+}
+
+func (errRows) Close()                                       {}
+func (e errRows) Err() error                                 { return e.err }
+func (errRows) CommandTag() pgconn.CommandTag                { return pgconn.CommandTag{} }
+func (errRows) FieldDescriptions() []pgconn.FieldDescription { return nil }
+func (errRows) Next() bool                                   { return false }
+func (e errRows) Scan(dest ...any) error                     { return e.err }
+func (e errRows) Values() ([]any, error)                     { return nil, e.err }
+func (e errRows) RawValues() [][]byte                        { return nil }
+func (e errRows) Conn() *pgx.Conn                            { return nil }
+
+type errRow struct {
+	err error
+}
+
+func (e errRow) Scan(dest ...any) error { return e.err }
+
+type poolRows struct {
+	r   pgx.Rows
+	c   *Conn
+	err error
+}
+
+func (rows *poolRows) Close() {
+	rows.r.Close()
+	if rows.c != nil {
+		rows.c.Release()
+		rows.c = nil
+	}
+}
+
+func (rows *poolRows) Err() error {
+	if rows.err != nil {
+		return rows.err
+	}
+	return rows.r.Err()
+}
+
+func (rows *poolRows) CommandTag() pgconn.CommandTag {
+	return rows.r.CommandTag()
+}
+
+func (rows *poolRows) FieldDescriptions() []pgconn.FieldDescription {
+	return rows.r.FieldDescriptions()
+}
+
+func (rows *poolRows) Next() bool {
+	if rows.err != nil {
+		return false
+	}
+
+	n := rows.r.Next()
+	if !n {
+		rows.Close()
+	}
+	return n
+}
+
+func (rows *poolRows) Scan(dest ...any) error {
+	err := rows.r.Scan(dest...)
+	if err != nil {
+		rows.Close()
+	}
+	return err
+}
+
+func (rows *poolRows) Values() ([]any, error) {
+	values, err := rows.r.Values()
+	if err != nil {
+		rows.Close()
+	}
+	return values, err
+}
+
+func (rows *poolRows) RawValues() [][]byte {
+	return rows.r.RawValues()
+}
+
+func (rows *poolRows) Conn() *pgx.Conn {
+	return rows.r.Conn()
+}
+
+type poolRow struct {
+	r   pgx.Row
+	c   *Conn
+	err error
+}
+
+func (row *poolRow) Scan(dest ...any) error {
+	if row.err != nil {
+		return row.err
+	}
+
+	panicked := true
+	defer func() {
+		if panicked && row.c != nil {
+			row.c.Release()
+		}
+	}()
+	err := row.r.Scan(dest...)
+	panicked = false
+	if row.c != nil {
+		row.c.Release()
+	}
+	return err
+}

vendor/github.com/jackc/pgx/v5/pgxpool/stat.go

@@ -0,0 +1,91 @@
+package pgxpool
+
+import (
+	"time"
+
+	"github.com/jackc/puddle/v2"
+)
+
+// Stat is a snapshot of Pool statistics.
+type Stat struct {
+	s                    *puddle.Stat
+	newConnsCount        int64
+	lifetimeDestroyCount int64
+	idleDestroyCount     int64
+}
+
+// AcquireCount returns the cumulative count of successful acquires from the pool.
+func (s *Stat) AcquireCount() int64 {
+	return s.s.AcquireCount()
+}
+
+// AcquireDuration returns the total duration of all successful acquires from
+// the pool.
+func (s *Stat) AcquireDuration() time.Duration {
+	return s.s.AcquireDuration()
+}
+
+// AcquiredConns returns the number of currently acquired connections in the pool.
+func (s *Stat) AcquiredConns() int32 {
+	return s.s.AcquiredResources()
+}
+
+// CanceledAcquireCount returns the cumulative count of acquires from the pool
+// that were canceled by a context.
+func (s *Stat) CanceledAcquireCount() int64 {
+	return s.s.CanceledAcquireCount()
+}
+
+// ConstructingConns returns the number of conns with construction in progress in
+// the pool.
+func (s *Stat) ConstructingConns() int32 {
+	return s.s.ConstructingResources()
+}
+
+// EmptyAcquireCount returns the cumulative count of successful acquires from the pool
+// that waited for a resource to be released or constructed because the pool was
+// empty.
+func (s *Stat) EmptyAcquireCount() int64 {
+	return s.s.EmptyAcquireCount()
+}
+
+// IdleConns returns the number of currently idle conns in the pool.
+func (s *Stat) IdleConns() int32 {
+	return s.s.IdleResources()
+}
+
+// MaxConns returns the maximum size of the pool.
+func (s *Stat) MaxConns() int32 {
+	return s.s.MaxResources()
+}
+
+// TotalConns returns the total number of resources currently in the pool.
+// The value is the sum of ConstructingConns, AcquiredConns, and
+// IdleConns.
+func (s *Stat) TotalConns() int32 {
+	return s.s.TotalResources()
+}
+
+// NewConnsCount returns the cumulative count of new connections opened.
+func (s *Stat) NewConnsCount() int64 {
+	return s.newConnsCount
+}
+
+// MaxLifetimeDestroyCount returns the cumulative count of connections destroyed
+// because they exceeded MaxConnLifetime.
+func (s *Stat) MaxLifetimeDestroyCount() int64 {
+	return s.lifetimeDestroyCount
+}
+
+// MaxIdleDestroyCount returns the cumulative count of connections destroyed because
+// they exceeded MaxConnIdleTime.
+func (s *Stat) MaxIdleDestroyCount() int64 {
+	return s.idleDestroyCount
+}
+
+// EmptyAcquireWaitTime returns the cumulative time waited for successful acquires
+// from the pool for a resource to be released or constructed because the pool was
+// empty.
+func (s *Stat) EmptyAcquireWaitTime() time.Duration {
+	return s.s.EmptyAcquireWaitTime()
+}

vendor/github.com/jackc/pgx/v5/pgxpool/tracer.go

@@ -0,0 +1,33 @@
+package pgxpool
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5"
+)
+
+// AcquireTracer traces Acquire.
+type AcquireTracer interface {
+	// TraceAcquireStart is called at the beginning of Acquire.
+	// The returned context is used for the rest of the call and will be passed to the TraceAcquireEnd.
+	TraceAcquireStart(ctx context.Context, pool *Pool, data TraceAcquireStartData) context.Context
+	// TraceAcquireEnd is called when a connection has been acquired.
+	TraceAcquireEnd(ctx context.Context, pool *Pool, data TraceAcquireEndData)
+}
+
+type TraceAcquireStartData struct{}
+
+type TraceAcquireEndData struct {
+	Conn *pgx.Conn
+	Err  error
+}
+
+// ReleaseTracer traces Release.
+type ReleaseTracer interface {
+	// TraceRelease is called at the beginning of Release.
+	TraceRelease(pool *Pool, data TraceReleaseData)
+}
+
+type TraceReleaseData struct {
+	Conn *pgx.Conn
+}

vendor/github.com/jackc/pgx/v5/pgxpool/tx.go

@@ -0,0 +1,83 @@
+package pgxpool
+
+import (
+	"context"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+)
+
+// Tx represents a database transaction acquired from a Pool.
+type Tx struct {
+	t pgx.Tx
+	c *Conn
+}
+
+// Begin starts a pseudo nested transaction implemented with a savepoint.
+func (tx *Tx) Begin(ctx context.Context) (pgx.Tx, error) {
+	return tx.t.Begin(ctx)
+}
+
+// Commit commits the transaction and returns the associated connection back to the Pool. Commit will return an error
+// where errors.Is(ErrTxClosed) is true if the Tx is already closed, but is otherwise safe to call multiple times. If
+// the commit fails with a rollback status (e.g. the transaction was already in a broken state) then ErrTxCommitRollback
+// will be returned.
+func (tx *Tx) Commit(ctx context.Context) error {
+	err := tx.t.Commit(ctx)
+	if tx.c != nil {
+		tx.c.Release()
+		tx.c = nil
+	}
+	return err
+}
+
+// Rollback rolls back the transaction and returns the associated connection back to the Pool. Rollback will return
+// where an error where errors.Is(ErrTxClosed) is true if the Tx is already closed, but is otherwise safe to call
+// multiple times. Hence, defer tx.Rollback() is safe even if tx.Commit() will be called first in a non-error condition.
+func (tx *Tx) Rollback(ctx context.Context) error {
+	err := tx.t.Rollback(ctx)
+	if tx.c != nil {
+		tx.c.Release()
+		tx.c = nil
+	}
+	return err
+}
+
+func (tx *Tx) CopyFrom(ctx context.Context, tableName pgx.Identifier, columnNames []string, rowSrc pgx.CopyFromSource) (int64, error) {
+	return tx.t.CopyFrom(ctx, tableName, columnNames, rowSrc)
+}
+
+func (tx *Tx) SendBatch(ctx context.Context, b *pgx.Batch) pgx.BatchResults {
+	return tx.t.SendBatch(ctx, b)
+}
+
+func (tx *Tx) LargeObjects() pgx.LargeObjects {
+	return tx.t.LargeObjects()
+}
+
+// Prepare creates a prepared statement with name and sql. If the name is empty,
+// an anonymous prepared statement will be used. sql can contain placeholders
+// for bound parameters. These placeholders are referenced positionally as $1, $2, etc.
+//
+// Prepare is idempotent; i.e. it is safe to call Prepare multiple times with the same
+// name and sql arguments. This allows a code path to Prepare and Query/Exec without
+// needing to first check whether the statement has already been prepared.
+func (tx *Tx) Prepare(ctx context.Context, name, sql string) (*pgconn.StatementDescription, error) {
+	return tx.t.Prepare(ctx, name, sql)
+}
+
+func (tx *Tx) Exec(ctx context.Context, sql string, arguments ...any) (pgconn.CommandTag, error) {
+	return tx.t.Exec(ctx, sql, arguments...)
+}
+
+func (tx *Tx) Query(ctx context.Context, sql string, args ...any) (pgx.Rows, error) {
+	return tx.t.Query(ctx, sql, args...)
+}
+
+func (tx *Tx) QueryRow(ctx context.Context, sql string, args ...any) pgx.Row {
+	return tx.t.QueryRow(ctx, sql, args...)
+}
+
+func (tx *Tx) Conn() *pgx.Conn {
+	return tx.t.Conn()
+}

vendor/github.com/jackc/pgx/v5/stdlib/sql.go

@@ -0,0 +1,909 @@
+// Package stdlib is the compatibility layer from pgx to database/sql.
+//
+// A database/sql connection can be established through sql.Open.
+//
+//	db, err := sql.Open("pgx", "postgres://pgx_md5:secret@localhost:5432/pgx_test?sslmode=disable")
+//	if err != nil {
+//	  return err
+//	}
+//
+// Or from a keyword/value string.
+//
+//	db, err := sql.Open("pgx", "user=postgres password=secret host=localhost port=5432 database=pgx_test sslmode=disable")
+//	if err != nil {
+//	  return err
+//	}
+//
+// Or from a *pgxpool.Pool.
+//
+//	pool, err := pgxpool.New(context.Background(), os.Getenv("DATABASE_URL"))
+//	if err != nil {
+//	  return err
+//	}
+//
+//	db := stdlib.OpenDBFromPool(pool)
+//
+// Or a pgx.ConnConfig can be used to set configuration not accessible via connection string. In this case the
+// pgx.ConnConfig must first be registered with the driver. This registration returns a connection string which is used
+// with sql.Open.
+//
+//	connConfig, _ := pgx.ParseConfig(os.Getenv("DATABASE_URL"))
+//	connConfig.Tracer = &tracelog.TraceLog{Logger: myLogger, LogLevel: tracelog.LogLevelInfo}
+//	connStr := stdlib.RegisterConnConfig(connConfig)
+//	db, _ := sql.Open("pgx", connStr)
+//
+// pgx uses standard PostgreSQL positional parameters in queries. e.g. $1, $2. It does not support named parameters.
+//
+//	db.QueryRow("select * from users where id=$1", userID)
+//
+// (*sql.Conn) Raw() can be used to get a *pgx.Conn from the standard database/sql.DB connection pool. This allows
+// operations that use pgx specific functionality.
+//
+//	// Given db is a *sql.DB
+//	conn, err := db.Conn(context.Background())
+//	if err != nil {
+//	  // handle error from acquiring connection from DB pool
+//	}
+//
+//	err = conn.Raw(func(driverConn any) error {
+//	  conn := driverConn.(*stdlib.Conn).Conn() // conn is a *pgx.Conn
+//	  // Do pgx specific stuff with conn
+//	  conn.CopyFrom(...)
+//	  return nil
+//	})
+//	if err != nil {
+//	  // handle error that occurred while using *pgx.Conn
+//	}
+//
+// # PostgreSQL Specific Data Types
+//
+// The pgtype package provides support for PostgreSQL specific types. *pgtype.Map.SQLScanner is an adapter that makes
+// these types usable as a sql.Scanner.
+//
+//	m := pgtype.NewMap()
+//	var a []int64
+//	err := db.QueryRow("select '{1,2,3}'::bigint[]").Scan(m.SQLScanner(&a))
+package stdlib
+
+import (
+	"context"
+	"database/sql"
+	"database/sql/driver"
+	"errors"
+	"fmt"
+	"io"
+	"math"
+	"math/rand/v2"
+	"reflect"
+	"slices"
+	"strconv"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+	"github.com/jackc/pgx/v5/pgtype"
+	"github.com/jackc/pgx/v5/pgxpool"
+)
+
+// Only intrinsic types should be binary format with database/sql.
+var databaseSQLResultFormats pgx.QueryResultFormatsByOID
+
+var pgxDriver *Driver
+
+func init() {
+	pgxDriver = &Driver{
+		configs: make(map[string]*pgx.ConnConfig),
+	}
+
+	// if pgx driver was already registered by different pgx major version then we
+	// skip registration under the default name.
+	if !slices.Contains(sql.Drivers(), "pgx") {
+		sql.Register("pgx", pgxDriver)
+	}
+	sql.Register("pgx/v5", pgxDriver)
+
+	databaseSQLResultFormats = pgx.QueryResultFormatsByOID{
+		pgtype.BoolOID:        1,
+		pgtype.ByteaOID:       1,
+		pgtype.CIDOID:         1,
+		pgtype.DateOID:        1,
+		pgtype.Float4OID:      1,
+		pgtype.Float8OID:      1,
+		pgtype.Int2OID:        1,
+		pgtype.Int4OID:        1,
+		pgtype.Int8OID:        1,
+		pgtype.OIDOID:         1,
+		pgtype.TimestampOID:   1,
+		pgtype.TimestamptzOID: 1,
+		pgtype.XIDOID:         1,
+	}
+}
+
+// OptionOpenDB options for configuring the driver when opening a new db pool.
+type OptionOpenDB func(*connector)
+
+// ShouldPingParams are passed to OptionShouldPing to decide whether to ping before reusing a connection.
+type ShouldPingParams struct {
+	// Conn is the underlying pgx connection.
+	Conn *pgx.Conn
+	// IdleDuration is how long it has been since ResetSession last ran.
+	IdleDuration time.Duration
+}
+
+// OptionShouldPing controls whether stdlib should issue a liveness ping before reusing a connection.
+// If the function returns true, stdlib will ping.
+// If it returns false, stdlib will skip the ping.
+// If not provided, default is ping only when IdleDuration > 1s.
+func OptionShouldPing(f func(context.Context, ShouldPingParams) bool) OptionOpenDB {
+	return func(dc *connector) { dc.ShouldPing = f }
+}
+
+// OptionBeforeConnect provides a callback for before connect. It is passed a shallow copy of the ConnConfig that will
+// be used to connect, so only its immediate members should be modified. Used only if db is opened with *pgx.ConnConfig.
+func OptionBeforeConnect(bc func(context.Context, *pgx.ConnConfig) error) OptionOpenDB {
+	return func(dc *connector) {
+		dc.BeforeConnect = bc
+	}
+}
+
+// OptionAfterConnect provides a callback for after connect. Used only if db is opened with *pgx.ConnConfig.
+func OptionAfterConnect(ac func(context.Context, *pgx.Conn) error) OptionOpenDB {
+	return func(dc *connector) {
+		dc.AfterConnect = ac
+	}
+}
+
+// OptionResetSession provides a callback that can be used to add custom logic prior to executing a query on the
+// connection if the connection has been used before.
+// If ResetSessionFunc returns ErrBadConn error the connection will be discarded.
+func OptionResetSession(rs func(context.Context, *pgx.Conn) error) OptionOpenDB {
+	return func(dc *connector) {
+		dc.ResetSession = rs
+	}
+}
+
+// RandomizeHostOrderFunc is a BeforeConnect hook that randomizes the host order in the provided connConfig, so that a
+// new host becomes primary each time. This is useful to distribute connections for multi-master databases like
+// CockroachDB. If you use this you likely should set https://golang.org/pkg/database/sql/#DB.SetConnMaxLifetime as well
+// to ensure that connections are periodically rebalanced across your nodes.
+func RandomizeHostOrderFunc(ctx context.Context, connConfig *pgx.ConnConfig) error {
+	if len(connConfig.Fallbacks) == 0 {
+		return nil
+	}
+
+	newFallbacks := append([]*pgconn.FallbackConfig{{
+		Host:      connConfig.Host,
+		Port:      connConfig.Port,
+		TLSConfig: connConfig.TLSConfig,
+	}}, connConfig.Fallbacks...)
+
+	rand.Shuffle(len(newFallbacks), func(i, j int) {
+		newFallbacks[i], newFallbacks[j] = newFallbacks[j], newFallbacks[i]
+	})
+
+	// Use the one that sorted last as the primary and keep the rest as the fallbacks
+	newPrimary := newFallbacks[len(newFallbacks)-1]
+	connConfig.Host = newPrimary.Host
+	connConfig.Port = newPrimary.Port
+	connConfig.TLSConfig = newPrimary.TLSConfig
+	connConfig.Fallbacks = newFallbacks[:len(newFallbacks)-1]
+	return nil
+}
+
+func GetConnector(config pgx.ConnConfig, opts ...OptionOpenDB) driver.Connector {
+	c := connector{
+		ConnConfig:    config,
+		BeforeConnect: func(context.Context, *pgx.ConnConfig) error { return nil }, // noop before connect by default
+		AfterConnect:  func(context.Context, *pgx.Conn) error { return nil },       // noop after connect by default
+		ResetSession:  func(context.Context, *pgx.Conn) error { return nil },       // noop reset session by default
+		driver:        pgxDriver,
+	}
+
+	for _, opt := range opts {
+		opt(&c)
+	}
+	return c
+}
+
+// GetPoolConnector creates a new driver.Connector from the given *pgxpool.Pool. By using this be sure to set the
+// maximum idle connections of the *sql.DB created with this connector to zero since they must be managed from the
+// *pgxpool.Pool. This is required to avoid acquiring all the connections from the pgxpool and starving any direct
+// users of the pgxpool.
+func GetPoolConnector(pool *pgxpool.Pool, opts ...OptionOpenDB) driver.Connector {
+	c := connector{
+		pool:         pool,
+		ResetSession: func(context.Context, *pgx.Conn) error { return nil }, // noop reset session by default
+		driver:       pgxDriver,
+	}
+
+	for _, opt := range opts {
+		opt(&c)
+	}
+
+	return c
+}
+
+func OpenDB(config pgx.ConnConfig, opts ...OptionOpenDB) *sql.DB {
+	c := GetConnector(config, opts...)
+	return sql.OpenDB(c)
+}
+
+// OpenDBFromPool creates a new *sql.DB from the given *pgxpool.Pool. Note that this method automatically sets the
+// maximum number of idle connections in *sql.DB to zero, since they must be managed from the *pgxpool.Pool. This is
+// required to avoid acquiring all the connections from the pgxpool and starving any direct users of the pgxpool. Note
+// that closing the returned *sql.DB will not close the *pgxpool.Pool.
+func OpenDBFromPool(pool *pgxpool.Pool, opts ...OptionOpenDB) *sql.DB {
+	c := GetPoolConnector(pool, opts...)
+	db := sql.OpenDB(c)
+	db.SetMaxIdleConns(0)
+	return db
+}
+
+type connector struct {
+	pgx.ConnConfig
+	pool          *pgxpool.Pool
+	BeforeConnect func(context.Context, *pgx.ConnConfig) error // function to call before creation of every new connection
+	AfterConnect  func(context.Context, *pgx.Conn) error       // function to call after creation of every new connection
+	ResetSession  func(context.Context, *pgx.Conn) error       // function is called before a connection is reused
+	ShouldPing    func(context.Context, ShouldPingParams) bool // function to decide if stdlib should ping before reusing a connection
+	driver        *Driver
+}
+
+// Connect implement driver.Connector interface
+func (c connector) Connect(ctx context.Context) (driver.Conn, error) {
+	var (
+		connConfig pgx.ConnConfig
+		conn       *pgx.Conn
+		close      func(context.Context) error
+		err        error
+	)
+
+	if c.pool == nil {
+		// Create a shallow copy of the config, so that BeforeConnect can safely modify it
+		connConfig = c.ConnConfig
+
+		if err = c.BeforeConnect(ctx, &connConfig); err != nil {
+			return nil, err
+		}
+
+		if conn, err = pgx.ConnectConfig(ctx, &connConfig); err != nil {
+			return nil, err
+		}
+
+		if err = c.AfterConnect(ctx, conn); err != nil {
+			return nil, err
+		}
+
+		close = conn.Close
+	} else {
+		var pconn *pgxpool.Conn
+
+		pconn, err = c.pool.Acquire(ctx)
+		if err != nil {
+			return nil, err
+		}
+
+		conn = pconn.Conn()
+
+		close = func(_ context.Context) error {
+			pconn.Release()
+			return nil
+		}
+	}
+
+	return &Conn{
+		conn:             conn,
+		close:            close,
+		driver:           c.driver,
+		connConfig:       connConfig,
+		resetSessionFunc: c.ResetSession,
+		shouldPing:       c.ShouldPing,
+		psRefCounts:      make(map[*pgconn.StatementDescription]int),
+	}, nil
+}
+
+// Driver implement driver.Connector interface
+func (c connector) Driver() driver.Driver {
+	return c.driver
+}
+
+// GetDefaultDriver returns the driver initialized in the init function
+// and used when the pgx driver is registered.
+func GetDefaultDriver() driver.Driver {
+	return pgxDriver
+}
+
+type Driver struct {
+	configMutex sync.Mutex
+	configs     map[string]*pgx.ConnConfig
+	sequence    int
+}
+
+func (d *Driver) Open(name string) (driver.Conn, error) {
+	ctx, cancel := context.WithTimeout(context.Background(), 60*time.Second) // Ensure eventual timeout
+	defer cancel()
+
+	connector, err := d.OpenConnector(name)
+	if err != nil {
+		return nil, err
+	}
+	return connector.Connect(ctx)
+}
+
+func (d *Driver) OpenConnector(name string) (driver.Connector, error) {
+	return &driverConnector{driver: d, name: name}, nil
+}
+
+func (d *Driver) registerConnConfig(c *pgx.ConnConfig) string {
+	d.configMutex.Lock()
+	connStr := fmt.Sprintf("registeredConnConfig%d", d.sequence)
+	d.sequence++
+	d.configs[connStr] = c
+	d.configMutex.Unlock()
+	return connStr
+}
+
+func (d *Driver) unregisterConnConfig(connStr string) {
+	d.configMutex.Lock()
+	delete(d.configs, connStr)
+	d.configMutex.Unlock()
+}
+
+type driverConnector struct {
+	driver *Driver
+	name   string
+}
+
+func (dc *driverConnector) Connect(ctx context.Context) (driver.Conn, error) {
+	var connConfig *pgx.ConnConfig
+
+	dc.driver.configMutex.Lock()
+	connConfig = dc.driver.configs[dc.name]
+	dc.driver.configMutex.Unlock()
+
+	if connConfig == nil {
+		var err error
+		connConfig, err = pgx.ParseConfig(dc.name)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	conn, err := pgx.ConnectConfig(ctx, connConfig)
+	if err != nil {
+		return nil, err
+	}
+
+	c := &Conn{
+		conn:             conn,
+		close:            conn.Close,
+		driver:           dc.driver,
+		connConfig:       *connConfig,
+		resetSessionFunc: func(context.Context, *pgx.Conn) error { return nil },
+		psRefCounts:      make(map[*pgconn.StatementDescription]int),
+	}
+
+	return c, nil
+}
+
+func (dc *driverConnector) Driver() driver.Driver {
+	return dc.driver
+}
+
+// RegisterConnConfig registers a ConnConfig and returns the connection string to use with Open.
+func RegisterConnConfig(c *pgx.ConnConfig) string {
+	return pgxDriver.registerConnConfig(c)
+}
+
+// UnregisterConnConfig removes the ConnConfig registration for connStr.
+func UnregisterConnConfig(connStr string) {
+	pgxDriver.unregisterConnConfig(connStr)
+}
+
+type Conn struct {
+	conn                 *pgx.Conn
+	close                func(context.Context) error
+	driver               *Driver
+	connConfig           pgx.ConnConfig
+	resetSessionFunc     func(context.Context, *pgx.Conn) error       // Function is called before a connection is reused
+	shouldPing           func(context.Context, ShouldPingParams) bool // Function to decide if stdlib should ping before reusing a connection
+	lastResetSessionTime time.Time
+
+	// psRefCounts contains reference counts for prepared statements. Prepare uses the underlying pgx logic to generate
+	// deterministic statement names from the statement text. If this query has already been prepared then the existing
+	// *pgconn.StatementDescription will be returned. However, this means that if Close is called on the returned Stmt
+	// then the underlying prepared statement will be closed even when the underlying prepared statement is still in use
+	// by another database/sql Stmt. To prevent this psRefCounts keeps track of how many database/sql statements are using
+	// the same underlying statement and only closes the underlying statement when the reference count reaches 0.
+	psRefCounts map[*pgconn.StatementDescription]int
+}
+
+// Conn returns the underlying *pgx.Conn
+func (c *Conn) Conn() *pgx.Conn {
+	return c.conn
+}
+
+func (c *Conn) Prepare(query string) (driver.Stmt, error) {
+	return c.PrepareContext(context.Background(), query)
+}
+
+func (c *Conn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) {
+	if c.conn.IsClosed() {
+		return nil, driver.ErrBadConn
+	}
+
+	sd, err := c.conn.Prepare(ctx, query, query)
+	if err != nil {
+		return nil, err
+	}
+	c.psRefCounts[sd]++
+
+	return &Stmt{sd: sd, conn: c}, nil
+}
+
+func (c *Conn) Close() error {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	defer cancel()
+	return c.close(ctx)
+}
+
+func (c *Conn) Begin() (driver.Tx, error) {
+	return c.BeginTx(context.Background(), driver.TxOptions{})
+}
+
+func (c *Conn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
+	if c.conn.IsClosed() {
+		return nil, driver.ErrBadConn
+	}
+
+	var pgxOpts pgx.TxOptions
+	switch sql.IsolationLevel(opts.Isolation) {
+	case sql.LevelDefault:
+	case sql.LevelReadUncommitted:
+		pgxOpts.IsoLevel = pgx.ReadUncommitted
+	case sql.LevelReadCommitted:
+		pgxOpts.IsoLevel = pgx.ReadCommitted
+	case sql.LevelRepeatableRead, sql.LevelSnapshot:
+		pgxOpts.IsoLevel = pgx.RepeatableRead
+	case sql.LevelSerializable:
+		pgxOpts.IsoLevel = pgx.Serializable
+	default:
+		return nil, fmt.Errorf("unsupported isolation: %v", opts.Isolation)
+	}
+
+	if opts.ReadOnly {
+		pgxOpts.AccessMode = pgx.ReadOnly
+	}
+
+	tx, err := c.conn.BeginTx(ctx, pgxOpts)
+	if err != nil {
+		return nil, err
+	}
+
+	return wrapTx{ctx: ctx, tx: tx}, nil
+}
+
+func (c *Conn) ExecContext(ctx context.Context, query string, argsV []driver.NamedValue) (driver.Result, error) {
+	if c.conn.IsClosed() {
+		return nil, driver.ErrBadConn
+	}
+
+	args := make([]any, len(argsV))
+	convertNamedArguments(args, argsV)
+
+	commandTag, err := c.conn.Exec(ctx, query, args...)
+	// if we got a network error before we had a chance to send the query, retry
+	if err != nil {
+		if pgconn.SafeToRetry(err) {
+			return nil, driver.ErrBadConn
+		}
+	}
+	return driver.RowsAffected(commandTag.RowsAffected()), err
+}
+
+func (c *Conn) QueryContext(ctx context.Context, query string, argsV []driver.NamedValue) (driver.Rows, error) {
+	if c.conn.IsClosed() {
+		return nil, driver.ErrBadConn
+	}
+
+	args := make([]any, 1+len(argsV))
+	args[0] = databaseSQLResultFormats
+	convertNamedArguments(args[1:], argsV)
+
+	rows, err := c.conn.Query(ctx, query, args...)
+	if err != nil {
+		if pgconn.SafeToRetry(err) {
+			return nil, driver.ErrBadConn
+		}
+		return nil, err
+	}
+
+	// Preload first row because otherwise we won't know what columns are available when database/sql asks.
+	more := rows.Next()
+	if err = rows.Err(); err != nil {
+		rows.Close()
+		return nil, err
+	}
+	return &Rows{conn: c, rows: rows, skipNext: true, skipNextMore: more}, nil
+}
+
+func (c *Conn) Ping(ctx context.Context) error {
+	if c.conn.IsClosed() {
+		return driver.ErrBadConn
+	}
+
+	err := c.conn.Ping(ctx)
+	if err != nil {
+		// A Ping failure implies some sort of fatal state. The connection is almost certainly already closed by the
+		// failure, but manually close it just to be sure.
+		c.Close()
+		return driver.ErrBadConn
+	}
+
+	return nil
+}
+
+func (c *Conn) CheckNamedValue(*driver.NamedValue) error {
+	// Underlying pgx supports sql.Scanner and driver.Valuer interfaces natively. So everything can be passed through directly.
+	return nil
+}
+
+func (c *Conn) ResetSession(ctx context.Context) error {
+	if c.conn.IsClosed() {
+		return driver.ErrBadConn
+	}
+
+	// Discard connection if it has an open transaction. This can happen if the
+	// application did not properly commit or rollback a transaction.
+	if c.conn.PgConn().TxStatus() != 'I' {
+		return driver.ErrBadConn
+	}
+
+	now := time.Now()
+	idle := now.Sub(c.lastResetSessionTime)
+
+	doPing := idle > time.Second // default behavior: ping only if idle > 1s
+
+	if c.shouldPing != nil {
+		doPing = c.shouldPing(ctx, ShouldPingParams{
+			Conn:         c.conn,
+			IdleDuration: idle,
+		})
+	}
+
+	if doPing {
+		if err := c.conn.PgConn().Ping(ctx); err != nil {
+			return driver.ErrBadConn
+		}
+	}
+
+	c.lastResetSessionTime = now
+
+	return c.resetSessionFunc(ctx, c.conn)
+}
+
+type Stmt struct {
+	sd   *pgconn.StatementDescription
+	conn *Conn
+}
+
+func (s *Stmt) Close() error {
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
+	defer cancel()
+
+	refCount := s.conn.psRefCounts[s.sd]
+	if refCount == 1 {
+		delete(s.conn.psRefCounts, s.sd)
+	} else {
+		s.conn.psRefCounts[s.sd]--
+		return nil
+	}
+
+	return s.conn.conn.Deallocate(ctx, s.sd.SQL)
+}
+
+func (s *Stmt) NumInput() int {
+	return len(s.sd.ParamOIDs)
+}
+
+func (s *Stmt) Exec(argsV []driver.Value) (driver.Result, error) {
+	return nil, errors.New("Stmt.Exec deprecated and not implemented")
+}
+
+func (s *Stmt) ExecContext(ctx context.Context, argsV []driver.NamedValue) (driver.Result, error) {
+	return s.conn.ExecContext(ctx, s.sd.SQL, argsV)
+}
+
+func (s *Stmt) Query(argsV []driver.Value) (driver.Rows, error) {
+	return nil, errors.New("Stmt.Query deprecated and not implemented")
+}
+
+func (s *Stmt) QueryContext(ctx context.Context, argsV []driver.NamedValue) (driver.Rows, error) {
+	return s.conn.QueryContext(ctx, s.sd.SQL, argsV)
+}
+
+type rowValueFunc func(src []byte) (driver.Value, error)
+
+type Rows struct {
+	conn         *Conn
+	rows         pgx.Rows
+	valueFuncs   []rowValueFunc
+	skipNext     bool
+	skipNextMore bool
+
+	columnNames []string
+}
+
+func (r *Rows) Columns() []string {
+	if r.columnNames == nil {
+		fields := r.rows.FieldDescriptions()
+		r.columnNames = make([]string, len(fields))
+		for i, fd := range fields {
+			r.columnNames[i] = string(fd.Name)
+		}
+	}
+
+	return r.columnNames
+}
+
+// ColumnTypeDatabaseTypeName returns the database system type name. If the name is unknown the OID is returned.
+func (r *Rows) ColumnTypeDatabaseTypeName(index int) string {
+	if dt, ok := r.conn.conn.TypeMap().TypeForOID(r.rows.FieldDescriptions()[index].DataTypeOID); ok {
+		return strings.ToUpper(dt.Name)
+	}
+
+	return strconv.FormatInt(int64(r.rows.FieldDescriptions()[index].DataTypeOID), 10)
+}
+
+const varHeaderSize = 4
+
+// ColumnTypeLength returns the length of the column type if the column is a
+// variable length type. If the column is not a variable length type ok
+// should return false.
+func (r *Rows) ColumnTypeLength(index int) (int64, bool) {
+	fd := r.rows.FieldDescriptions()[index]
+
+	switch fd.DataTypeOID {
+	case pgtype.TextOID, pgtype.ByteaOID:
+		return math.MaxInt64, true
+	case pgtype.VarcharOID, pgtype.BPCharOID:
+		return int64(fd.TypeModifier - varHeaderSize), true
+	case pgtype.VarbitOID:
+		return int64(fd.TypeModifier), true
+	default:
+		return 0, false
+	}
+}
+
+// ColumnTypePrecisionScale should return the precision and scale for decimal
+// types. If not applicable, ok should be false.
+func (r *Rows) ColumnTypePrecisionScale(index int) (precision, scale int64, ok bool) {
+	fd := r.rows.FieldDescriptions()[index]
+
+	switch fd.DataTypeOID {
+	case pgtype.NumericOID:
+		mod := fd.TypeModifier - varHeaderSize
+		precision = int64((mod >> 16) & 0xffff)
+		scale = int64(mod & 0xffff)
+		return precision, scale, true
+	default:
+		return 0, 0, false
+	}
+}
+
+// ColumnTypeScanType returns the value type that can be used to scan types into.
+func (r *Rows) ColumnTypeScanType(index int) reflect.Type {
+	fd := r.rows.FieldDescriptions()[index]
+
+	switch fd.DataTypeOID {
+	case pgtype.Float8OID:
+		return reflect.TypeFor[float64]()
+	case pgtype.Float4OID:
+		return reflect.TypeFor[float32]()
+	case pgtype.Int8OID:
+		return reflect.TypeFor[int64]()
+	case pgtype.Int4OID:
+		return reflect.TypeFor[int32]()
+	case pgtype.Int2OID:
+		return reflect.TypeFor[int16]()
+	case pgtype.BoolOID:
+		return reflect.TypeFor[bool]()
+	case pgtype.NumericOID:
+		return reflect.TypeFor[float64]()
+	case pgtype.DateOID, pgtype.TimestampOID, pgtype.TimestamptzOID:
+		return reflect.TypeFor[time.Time]()
+	case pgtype.ByteaOID:
+		return reflect.TypeFor[[]byte]()
+	default:
+		return reflect.TypeFor[string]()
+	}
+}
+
+func (r *Rows) Close() error {
+	r.rows.Close()
+	return r.rows.Err()
+}
+
+func (r *Rows) Next(dest []driver.Value) error {
+	m := r.conn.conn.TypeMap()
+	fieldDescriptions := r.rows.FieldDescriptions()
+
+	if r.valueFuncs == nil {
+		r.valueFuncs = make([]rowValueFunc, len(fieldDescriptions))
+
+		for i, fd := range fieldDescriptions {
+			dataTypeOID := fd.DataTypeOID
+			format := fd.Format
+
+			switch fd.DataTypeOID {
+			case pgtype.BoolOID:
+				var d bool
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					return d, err
+				}
+			case pgtype.ByteaOID:
+				var d []byte
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					return d, err
+				}
+			case pgtype.CIDOID, pgtype.OIDOID, pgtype.XIDOID:
+				var d pgtype.Uint32
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					if err != nil {
+						return nil, err
+					}
+					return d.Value()
+				}
+			case pgtype.DateOID:
+				var d pgtype.Date
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					if err != nil {
+						return nil, err
+					}
+					return d.Value()
+				}
+			case pgtype.Float4OID:
+				var d float32
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					return float64(d), err
+				}
+			case pgtype.Float8OID:
+				var d float64
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					return d, err
+				}
+			case pgtype.Int2OID:
+				var d int16
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					return int64(d), err
+				}
+			case pgtype.Int4OID:
+				var d int32
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					return int64(d), err
+				}
+			case pgtype.Int8OID:
+				var d int64
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					return d, err
+				}
+			case pgtype.JSONOID, pgtype.JSONBOID:
+				var d []byte
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					if err != nil {
+						return nil, err
+					}
+					return d, nil
+				}
+			case pgtype.TimestampOID:
+				var d pgtype.Timestamp
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					if err != nil {
+						return nil, err
+					}
+					return d.Value()
+				}
+			case pgtype.TimestamptzOID:
+				var d pgtype.Timestamptz
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					if err != nil {
+						return nil, err
+					}
+					return d.Value()
+				}
+			case pgtype.XMLOID:
+				var d []byte
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					if err != nil {
+						return nil, err
+					}
+					return d, nil
+				}
+			default:
+				var d string
+				scanPlan := m.PlanScan(dataTypeOID, format, &d)
+				r.valueFuncs[i] = func(src []byte) (driver.Value, error) {
+					err := scanPlan.Scan(src, &d)
+					return d, err
+				}
+			}
+		}
+	}
+
+	var more bool
+	if r.skipNext {
+		more = r.skipNextMore
+		r.skipNext = false
+	} else {
+		more = r.rows.Next()
+	}
+
+	if !more {
+		if r.rows.Err() == nil {
+			return io.EOF
+		} else {
+			return r.rows.Err()
+		}
+	}
+
+	for i, rv := range r.rows.RawValues() {
+		if rv != nil {
+			var err error
+			dest[i], err = r.valueFuncs[i](rv)
+			if err != nil {
+				return fmt.Errorf("convert field %d failed: %w", i, err)
+			}
+		} else {
+			dest[i] = nil
+		}
+	}
+
+	return nil
+}
+
+func convertNamedArguments(args []any, argsV []driver.NamedValue) {
+	for i, v := range argsV {
+		if v.Value != nil {
+			args[i] = v.Value.(any)
+		} else {
+			args[i] = nil
+		}
+	}
+}
+
+type wrapTx struct {
+	ctx context.Context
+	tx  pgx.Tx
+}
+
+func (wtx wrapTx) Commit() error { return wtx.tx.Commit(wtx.ctx) }
+
+func (wtx wrapTx) Rollback() error { return wtx.tx.Rollback(wtx.ctx) }

vendor/github.com/jackc/puddle/v2/CHANGELOG.md

@@ -0,0 +1,79 @@
+# 2.2.2 (September 10, 2024)
+
+* Add empty acquire time to stats (Maxim Ivanov)
+* Stop importing nanotime from runtime via linkname (maypok86)
+
+# 2.2.1 (July 15, 2023)
+
+* Fix: CreateResource cannot overflow pool. This changes documented behavior of CreateResource. Previously,
+  CreateResource could create a resource even if the pool was full. This could cause the pool to overflow. While this
+  was documented, it was documenting incorrect behavior. CreateResource now returns an error if the pool is full.
+
+# 2.2.0 (February 11, 2023)
+
+* Use Go 1.19 atomics and drop go.uber.org/atomic dependency
+
+# 2.1.2 (November 12, 2022)
+
+* Restore support to Go 1.18 via go.uber.org/atomic
+
+# 2.1.1 (November 11, 2022)
+
+* Fix create resource concurrently with Stat call race
+
+# 2.1.0 (October 28, 2022)
+
+* Concurrency control is now implemented with a semaphore. This simplifies some internal logic, resolves a few error conditions (including a deadlock), and improves performance. (Jan Dubsky)
+* Go 1.19 is now required for the improved atomic support.
+
+# 2.0.1 (October 28, 2022)
+
+* Fix race condition when Close is called concurrently with multiple constructors
+
+# 2.0.0 (September 17, 2022)
+
+* Use generics instead of interface{} (Столяров Владимир Алексеевич)
+* Add Reset
+* Do not cancel resource construction when Acquire is canceled
+* NewPool takes Config
+
+# 1.3.0 (August 27, 2022)
+
+* Acquire creates resources in background to allow creation to continue after Acquire is canceled (James Hartig)
+
+# 1.2.1 (December 2, 2021)
+
+* TryAcquire now does not block when background constructing resource
+
+# 1.2.0 (November 20, 2021)
+
+* Add TryAcquire (A. Jensen)
+* Fix: remove memory leak / unintentionally pinned memory when shrinking slices (Alexander Staubo)
+* Fix: Do not leave pool locked after panic from nil context
+
+# 1.1.4 (September 11, 2021)
+
+* Fix: Deadlock in CreateResource if pool was closed during resource acquisition (Dmitriy Matrenichev)
+
+# 1.1.3 (December 3, 2020)
+
+* Fix: Failed resource creation could cause concurrent Acquire to hang. (Evgeny Vanslov)
+
+# 1.1.2 (September 26, 2020)
+
+* Fix: Resource.Destroy no longer removes itself from the pool before its destructor has completed.
+* Fix: Prevent crash when pool is closed while resource is being created.
+
+# 1.1.1 (April 2, 2020)
+
+* Pool.Close can be safely called multiple times
+* AcquireAllIDle immediately returns nil if pool is closed
+* CreateResource checks if pool is closed before taking any action
+* Fix potential race condition when CreateResource and Close are called concurrently. CreateResource now checks if pool is closed before adding newly created resource to pool.
+
+# 1.1.0 (February 5, 2020)
+
+* Use runtime.nanotime for faster tracking of acquire time and last usage time.
+* Track resource idle time to enable client health check logic. (Patrick Ellul)
+* Add CreateResource to construct a new resource without acquiring it. (Patrick Ellul)
+* Fix deadlock race when acquire is cancelled. (Michael Tharp)

vendor/github.com/jackc/puddle/v2/LICENSE

@@ -0,0 +1,22 @@
+Copyright (c) 2018 Jack Christensen
+
+MIT License
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

vendor/github.com/jackc/puddle/v2/README.md

@@ -0,0 +1,80 @@
+[![Go Reference](https://pkg.go.dev/badge/github.com/jackc/puddle/v2.svg)](https://pkg.go.dev/github.com/jackc/puddle/v2)
+![Build Status](https://github.com/jackc/puddle/actions/workflows/ci.yml/badge.svg)
+
+# Puddle
+
+Puddle is a tiny generic resource pool library for Go that uses the standard
+context library to signal cancellation of acquires. It is designed to contain
+the minimum functionality required for a resource pool. It can be used directly
+or it can be used as the base for a domain specific resource pool. For example,
+a database connection pool may use puddle internally and implement health checks
+and keep-alive behavior without needing to implement any concurrent code of its
+own.
+
+## Features
+
+* Acquire cancellation via context standard library
+* Statistics API for monitoring pool pressure
+* No dependencies outside of standard library and golang.org/x/sync
+* High performance
+* 100% test coverage of reachable code
+
+## Example Usage
+
+```go
+package main
+
+import (
+	"context"
+	"log"
+	"net"
+
+	"github.com/jackc/puddle/v2"
+)
+
+func main() {
+	constructor := func(context.Context) (net.Conn, error) {
+		return net.Dial("tcp", "127.0.0.1:8080")
+	}
+	destructor := func(value net.Conn) {
+		value.Close()
+	}
+	maxPoolSize := int32(10)
+
+	pool, err := puddle.NewPool(&puddle.Config[net.Conn]{Constructor: constructor, Destructor: destructor, MaxSize: maxPoolSize})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Acquire resource from the pool.
+	res, err := pool.Acquire(context.Background())
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Use resource.
+	_, err = res.Value().Write([]byte{1})
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Release when done.
+	res.Release()
+}
+```
+
+## Status
+
+Puddle is stable and feature complete.
+
+* Bug reports and fixes are welcome.
+* New features will usually not be accepted if they can be feasibly implemented in a wrapper.
+* Performance optimizations will usually not be accepted unless the performance issue rises to the level of a bug.
+
+## Supported Go Versions
+
+puddle supports the same versions of Go that are supported by the Go project. For [Go](https://golang.org/doc/devel/release.html#policy) that is the two most recent major releases. This means puddle supports Go 1.19 and higher.
+
+## License
+
+MIT

vendor/github.com/jackc/puddle/v2/context.go

@@ -0,0 +1,24 @@
+package puddle
+
+import (
+	"context"
+	"time"
+)
+
+// valueCancelCtx combines two contexts into one. One context is used for values and the other is used for cancellation.
+type valueCancelCtx struct {
+	valueCtx  context.Context
+	cancelCtx context.Context
+}
+
+func (ctx *valueCancelCtx) Deadline() (time.Time, bool) { return ctx.cancelCtx.Deadline() }
+func (ctx *valueCancelCtx) Done() <-chan struct{}       { return ctx.cancelCtx.Done() }
+func (ctx *valueCancelCtx) Err() error                  { return ctx.cancelCtx.Err() }
+func (ctx *valueCancelCtx) Value(key any) any           { return ctx.valueCtx.Value(key) }
+
+func newValueCancelCtx(valueCtx, cancelContext context.Context) context.Context {
+	return &valueCancelCtx{
+		valueCtx:  valueCtx,
+		cancelCtx: cancelContext,
+	}
+}

vendor/github.com/jackc/puddle/v2/doc.go

@@ -0,0 +1,11 @@
+// Package puddle is a generic resource pool with type-parametrized api.
+/*
+
+Puddle is a tiny generic resource pool library for Go that uses the standard
+context library to signal cancellation of acquires. It is designed to contain
+the minimum functionality a resource pool needs that cannot be implemented
+without concurrency concerns. For example, a database connection pool may use
+puddle internally and implement health checks and keep-alive behavior without
+needing to implement any concurrent code of its own.
+*/
+package puddle

vendor/github.com/jackc/puddle/v2/internal/genstack/gen_stack.go

@@ -0,0 +1,85 @@
+package genstack
+
+// GenStack implements a generational stack.
+//
+// GenStack works as common stack except for the fact that all elements in the
+// older generation are guaranteed to be popped before any element in the newer
+// generation. New elements are always pushed to the current (newest)
+// generation.
+//
+// We could also say that GenStack behaves as a stack in case of a single
+// generation, but it behaves as a queue of individual generation stacks.
+type GenStack[T any] struct {
+	// We can represent arbitrary number of generations using 2 stacks. The
+	// new stack stores all new pushes and the old stack serves all reads.
+	// Old stack can represent multiple generations. If old == new, then all
+	// elements pushed in previous (not current) generations have already
+	// been popped.
+
+	old *stack[T]
+	new *stack[T]
+}
+
+// NewGenStack creates a new empty GenStack.
+func NewGenStack[T any]() *GenStack[T] {
+	s := &stack[T]{}
+	return &GenStack[T]{
+		old: s,
+		new: s,
+	}
+}
+
+func (s *GenStack[T]) Pop() (T, bool) {
+	// Pushes always append to the new stack, so if the old once becomes
+	// empty, it will remail empty forever.
+	if s.old.len() == 0 && s.old != s.new {
+		s.old = s.new
+	}
+
+	if s.old.len() == 0 {
+		var zero T
+		return zero, false
+	}
+
+	return s.old.pop(), true
+}
+
+// Push pushes a new element at the top of the stack.
+func (s *GenStack[T]) Push(v T) { s.new.push(v) }
+
+// NextGen starts a new stack generation.
+func (s *GenStack[T]) NextGen() {
+	if s.old == s.new {
+		s.new = &stack[T]{}
+		return
+	}
+
+	// We need to pop from the old stack to the top of the new stack. Let's
+	// have an example:
+	//
+	//   Old: <bottom> 4 3 2 1
+	//   New: <bottom> 8 7 6 5
+	//   PopOrder: 1 2 3 4 5 6 7 8
+	//
+	//
+	// To preserve pop order, we have to take all elements from the old
+	// stack and push them to the top of new stack:
+	//
+	//   New: 8 7 6 5 4 3 2 1
+	//
+	s.new.push(s.old.takeAll()...)
+
+	// We have the old stack allocated and empty, so why not to reuse it as
+	// new new stack.
+	s.old, s.new = s.new, s.old
+}
+
+// Len returns number of elements in the stack.
+func (s *GenStack[T]) Len() int {
+	l := s.old.len()
+	if s.old != s.new {
+		l += s.new.len()
+	}
+
+	return l
+}