Am Dienstag, 19. Juli 2005 15:40 schrieb Tom Lane:
> Janning Vygen <vygen@xxxxxx> writes:
> > On more related question:
> > I updated pg_trigger and pg_constraint and changed all my FK:
> >
> > UPDATE pg_trigger
> > SET
> > tgdeferrable = true,
> > tginitdeferred = true
> > WHERE tgconstrname LIKE 'fk_%'
> > ;
> >
> > UPDATE pg_constraint
> > SET
> > condeferrable = true,
> > condeferred = true
> > WHERE conname LIKE 'fk_%'
> > ;
>
> No, only the triggers that are for checks should be marked
> deferrable/deferred. These are the ones using functions
> RI_FKey_check_ins
> RI_FKey_check_upd
> RI_FKey_noaction_del
> RI_FKey_noaction_upd
> You want the others nondeferrable because (a) that's the standard
> behavior and (b) it'll ensure that the actions happen before the
> checks are made.
ok thanks. i do it now like this:
UPDATE pg_trigger
SET
tgdeferrable = true,
tginitdeferred = true
WHERE tgconstrname LIKE 'fk_%'
AND tgfoid IN (
SELECT oid FROM pg_proc
WHERE proname IN (
'RI_FKey_check_ins', 'RI_FKey_check_upd',
'RI_FKey_noaction_del', 'RI_FKey_noaction_upd')
)
;
UPDATE pg_constraint
SET
condeferrable = true,
condeferred = true
WHERE conname LIKE 'fk_%'
;
COMMIT;
This should work i hope, but i feel a little bit unsure if hacking the
pg_catalog is a good way to do it. Maybe I should have take the long, but
secure way by modifying the schema with ddl statements.
kind regards,
janning
---------------------------(end of broadcast)---------------------------
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to majordomo@xxxxxxxxxxxxxx so that your
message can get through to the mailing list cleanly
