On Wed, 2008-06-04 at 10:59 -0400, Tom Lane wrote:
> Decibel! <decibel@decibel.org> writes:
> > Ok, I'll take a stab at such a list. Can anyone think of any reasons
> > why CREATE TRIGGER couldn't get by with ShareLock?
>
> pg_class.reltriggers.
ISTM that we do this in many ways on pg_class, if we believe the docs.
We have
* relhasindex (bool) set by CREATE INDEX but not unset by DROP INDEX
* relhasrules (bool)
* reltriggers (int2) set by CREATE and DROP, since its an integer
Seems we should have one consistent way of adding associated objects.
If CREATE INDEX can take a Share lock and can update pg_class, why would
it not be theoretically possible for CREATE TRIGGER?
-- Simon Riggs www.2ndQuadrant.comPostgreSQL Training, Services and Support