From: | hubert depesz lubaczewski <depesz(at)depesz(dot)pl> |
---|---|
To: | al_nunes(at)ciclotecnologia(dot)com(dot)br |
Cc: | pgsql-docs(at)postgresql(dot)org |
Subject: | Re: Trigger Documentation |
Date: | 2001-06-10 07:35:44 |
Message-ID: | 20010610093544.14c48d82.depesz@depesz.pl |
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Thread: | |
Lists: | pgsql-docs |
On Fri, 8 Jun 2001 11:55:08 -0300 (BRT)
al_nunes(at)ciclotecnologia(dot)com(dot)br wrote:
> What I need to do now is very simple, I want to make a trigger that
check
> if some text field is null. If it is, I want to record something on
> it. What I was trying (unsuccessfully):
> CREATE FUNCTION ins_ip() RETURNS OPAQUE AS '
> BEGIN
> IF NEW.<field> ISNULL THEN
> NEW.<field> := "something";
> RETURN NEW;
> END;
you're missing two things.
1st. there should be end if
2nd. is should be NEW.<field> := ''something'';
btw. it's better to do it with "DEFAULT" statement in create table.
depesz
--
hubert depesz lubaczewski http://www.depesz.pl/
------------------------------------------------------------------------
najwspanialszą rzeczą jaką dało nam nowoczesne społeczeństwo,
jest niesamowita wręcz łatwość unikania kontaktów z nim ...
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