Re: SRF Functions don't want to return empty tuple

----- Original Message -----
From: "Stephan Szabo" <sszabo@megazone.bigpanda.com>
To: "GRIMOIS Eric" <eric.grimois@cpam-cergypontoise.cnamts.fr>
Cc: <pgsql-sql@postgresql.org>
Sent: Monday, September 29, 2003 6:40 PM
Subject: Re: [SQL] SRF Functions don't want to return empty tuple


>
> On Mon, 29 Sep 2003, GRIMOIS Eric wrote:
>
> > Hi
> >
> > I have a problem with SRF functions on a RedHat 8.0 system with
PostgreSQL
> > 7.3.2.
> >
> > Schema is following :
> >
> > CREATE TABLE public.agents (
> >   numero_age int4 NOT NULL,
> >   nom_age varchar(30) NOT NULL,
> >   prenom_age varchar(30) NOT NULL,
> >   date_entree_age date NOT NULL,
> >   identite varchar(50),
> >   CONSTRAINT agents_pkey PRIMARY KEY (numero_age)
> > ) WITH OIDS;
> >
> > INSERT INTO public.agents VALUES (78888, 'PERAVIF', 'JO', '1967-06-18',
'')
> >
> > CREATE FUNCTION public.liste_agents(int4) RETURNS public.agents AS
'SELECT *
> > FROM agents WHERE numero_age = $1'  LANGUAGE 'sql' VOLATILE;
>
> Are you sure you don't want setof public.agents if you want to be able to
> return an empty set?
>

Yes, you're right. Now, it works.

Thank you very much

The syntax I used was wrong, but is accepted by Postgres. What does it mean
?