Re: TRIGGER TRUNCATE -- CASCADE or RESTRICT

You can use the following to list the triggers and see what functions they call. Then you can check pg_proc to see how TRUNCATE is used in prosrc.


SELECT c.relname,
       t.tgname,
       p.proname        AS function_called,
       t.tgconstraint   AS is_constraint,
       CASE WHEN t.tgconstrrelid > 0
            THEN (SELECT relname
                   FROM pg_class
                  WHERE oid = t.tgconstrrelid)
            ELSE ''
        END             AS constr_tbl,
       t.tgenabled
  FROM pg_trigger t
  INNER JOIN pg_proc p  ON ( p.oid = t.tgfoid)
  INNER JOIN pg_class c ON (c.oid = t.tgrelid)
  WHERE tgname NOT LIKE 'pg_%'
    AND tgname NOT LIKE 'RI_%'  -- < comment out to see constraints
--    AND t.tgenabled = FALSE
 ORDER BY 1;