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Date: Mon, 29 Sep 2003 09:40:06 -0700 (PDT)
From: Stephan Szabo <sszabo@megazone.bigpanda.com>
To: GRIMOIS Eric <eric.grimois@cpam-cergypontoise.cnamts.fr>
Cc: pgsql-sql@postgresql.org
Subject: Re: SRF Functions don't want to return empty tuple
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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?