Paweł Domański
16 lines
818 B
SQL
16 lines
818 B
SQL
SELECT
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o.conname AS constraint_name,
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(SELECT nspname FROM pg_namespace WHERE oid=m.relnamespace) AS source_schema,
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m.relname AS source_table,
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(SELECT a.attname FROM pg_attribute a WHERE a.attrelid = m.oid AND a.attnum = o.conkey[1] AND a.attisdropped = false) AS source_column,
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(SELECT nspname FROM pg_namespace WHERE oid=f.relnamespace) AS target_schema,
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f.relname AS target_table,
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(SELECT a.attname FROM pg_attribute a WHERE a.attrelid = f.oid AND a.attnum = o.confkey[1] AND a.attisdropped = false) AS target_column
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FROM
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pg_constraint o LEFT JOIN pg_class f ON f.oid = o.confrelid LEFT JOIN pg_class m ON m.oid = o.conrelid
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WHERE
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o.contype = 'f' AND o.conrelid IN (SELECT oid FROM pg_class c WHERE c.relkind = 'r');
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REFERENCE - https://stackoverflow.com/questions/1152260/postgres-sql-to-list-table-foreign-keys |