SELECT pt.tgargs, pt.tgnargs, pt.tgdeferrable, pt.tginitdeferred,
       pg_proc.proname, pg_proc_1.proname FROM pg_class pc,
       pg_proc pg_proc, pg_proc pg_proc_1, pg_trigger pg_trigger,
       pg_trigger pg_trigger_1, pg_proc pp, pg_trigger pt
   WHERE  pt.tgrelid = pc.oid AND pp.oid = pt.tgfoid
       AND pg_trigger.tgconstrrelid = pc.oid
       AND pg_proc.oid = pg_trigger.tgfoid
       AND pg_trigger_1.tgfoid = pg_proc_1.oid
       AND pg_trigger_1.tgconstrrelid = pc.oid
       AND ((pc.relname= 'user_groups')
       AND (pp.proname LIKE '%%ins')
       AND (pg_proc.proname LIKE '%%upd')
       AND (pg_proc_1.proname LIKE '%%del')
       AND (pg_trigger.tgrelid=pt.tgconstrrelid)
       AND (pg_trigger_1.tgrelid = pt.tgconstrrelid));