Re: Consultas varias

On Thu, Dec 16, 2004 at 12:03:30PM -0400, Esteban Osorio wrote:

Hola,

> CREATE FUNCTION public.busca_depcia() RETURNS refcursor AS '
> DECLARE
> cursor1 CURSOR FOR SELECT id_depcia, descripcion FROM dependencia order by
> descripcion;
> BEGIN
> OPEN cursor1;
> RETURN (cursor1);
> END;
> ' LANGUAGE 'plpgsql' VOLATILE;

Ugh ... ese truco del refcursor esta obsoleto desde Postgres 7.3. Mejor
algo como

CREATE FUNCTION public.busca_depcia() RETURNS setof record AS '
DECLARE
rec record;
begin
FOR SELECT into rec id_depcia, descripcion FROM dependencia order by descripcion loop
return next rec;
end loop;
return;
END;
' LANGUAGE 'plpgsql' VOLATILE;

Luego lo invocas como

select public.busca_depcia() as foo (a int, b text);

--
Alvaro Herrera (<alvherre[(at)]dcc(dot)uchile(dot)cl>)
Essentially, you're proposing Kevlar shoes as a solution for the problem
that you want to walk around carrying a loaded gun aimed at your foot.
(Tom Lane)