Re: Disabling Triggers

That looks like a good solution.
And that way it won't cascade.

Thanks

-----Original Message-----
From: pgsql-general-owner@postgresql.org
[mailto:pgsql-general-owner@postgresql.org] On Behalf Of Richard Huxton
Sent: May 11, 2005 11:53 AM
To: Mark Borins
Cc: pgsql-general@postgresql.org
Subject: Re: [GENERAL] Disabling Triggers

Mark Borins wrote:
> I am creating a system where I have a trigger on three different tables.
> There is a particular Boolean field in each of these tables that when it
is
> set in table it should be set the same in the other two.

Just make sure you only check the boolean value too:

-- Trigger on table a does:
IF NEW.my_bool=OLD.my_bool THEN
   RETURN NEW;
END IF;

UPDATE b SET my_bool=NEW.my_bool
   WHERE id=NEW.something AND my_bool <> NEW.my_bool
UPDATE c SET my_bool=NEW.my_bool
   WHERE id=NEW.something AND my_bool <> NEW.my_bool
-- End code

That way, you always do the minimal amount of work anyway.
--
   Richard Huxton
   Archonet Ltd

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