Hein
165623bb1d
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* Introduce new templates for creating unique, check, and foreign key constraints with existence checks. * Add templates for setting sequence values and creating sequences. * Refactor existing SQL generation logic to utilize new templates for better maintainability and readability. * Ensure identifiers are properly quoted to handle special characters and reserved keywords.
12 lines
388 B
Cheetah
12 lines
388 B
Cheetah
DO $$
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BEGIN
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.table_constraints
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WHERE table_schema = '{{.SchemaName}}'
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AND table_name = '{{.TableName}}'
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AND constraint_name = '{{.ConstraintName}}'
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) THEN
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ALTER TABLE {{quote_ident .SchemaName}}.{{quote_ident .TableName}} ADD CONSTRAINT {{quote_ident .ConstraintName}} CHECK ({{.Expression}});
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END IF;
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END;
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$$; |