sql writer

pkg/writers/pgsql/templates/base_ddl.tmpl

@@ -0,0 +1,34 @@
+{{/* Base DDL template with common structure */}}
+{{- define "ddl_header" -}}
+-- DDL Operation: {{.Operation}}
+-- Schema: {{.Schema}}
+-- Object: {{.ObjectName}}
+{{- end -}}
+
+{{- define "ddl_footer" -}}
+-- End of {{.Operation}}
+{{- end -}}
+
+{{/* Base ALTER TABLE structure */}}
+{{- define "alter_table_base" -}}
+ALTER TABLE {{.SchemaName}}.{{.TableName}}
+  {{block "alter_operation" .}}{{end}};
+{{- end -}}
+
+{{/* Common existence check pattern */}}
+{{- define "exists_check" -}}
+DO $$
+BEGIN
+    IF NOT EXISTS (
+        {{block "exists_query" .}}{{end}}
+    ) THEN
+        {{block "create_statement" .}}{{end}}
+    END IF;
+END;
+$$;
+{{- end -}}
+
+{{/* Common drop pattern */}}
+{{- define "drop_if_exists" -}}
+{{block "drop_type" .}}{{end}} IF EXISTS {{.SchemaName}}.{{.ObjectName}};
+{{- end -}}