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* Introduce `--flatten-schema` flag to convert, merge, and split commands. * Modify database writing functions to support flattened schema names. * Update template functions to handle schema.table naming convention. * Enhance PostgreSQL writer to utilize flattened schema in generated SQL. * Update tests to ensure compatibility with new flattening feature. * Dependencies updated for improved functionality.
39 lines
1.1 KiB
Cheetah
39 lines
1.1 KiB
Cheetah
{{/* Base constraint template */}}
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{{- define "constraint_base" -}}
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ALTER TABLE {{qual_table_raw .SchemaName .TableName}}
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ADD CONSTRAINT {{.ConstraintName}}
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{{block "constraint_definition" .}}{{end}};
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{{- end -}}
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{{/* Drop constraint with check */}}
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{{- define "drop_constraint_safe" -}}
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DO $$
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BEGIN
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IF EXISTS (
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SELECT 1 FROM information_schema.table_constraints
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WHERE table_schema = '{{.SchemaName}}'
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AND table_name = '{{.TableName}}'
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AND constraint_name = '{{.ConstraintName}}'
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) THEN
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ALTER TABLE {{qual_table_raw .SchemaName .TableName}}
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DROP CONSTRAINT {{.ConstraintName}};
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END IF;
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END;
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$$;
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{{- end -}}
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{{/* Add constraint with existence check */}}
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{{- define "add_constraint_safe" -}}
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DO $$
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BEGIN
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.table_constraints
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WHERE table_schema = '{{.SchemaName}}'
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AND table_name = '{{.TableName}}'
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AND constraint_name = '{{.ConstraintName}}'
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) THEN
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{{template "constraint_base" .}}
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END IF;
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END;
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$$;
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{{- end -}} |