SELECT con.*
FROM pg_catalog.pg_constraint con
INNER JOIN pg_catalog.pg_class rel
ON rel.oid = con.conrelid
INNER JOIN pg_catalog.pg_namespace nsp
ON nsp.oid = connamespace
WHERE nsp.nspname = ''
AND rel.relname = '
SELECT *
FROM pg_catalog.pg_constraint con,
pg_catalog.pg_class rel,
pg_catalog.pg_namespace nsp
WHERE
rel.oid = con.conrelid
AND nsp.oid = connamespace
AND nsp.nspname like ''
AND rel.relname like '