| From: | "keyser soze" <bajopalabra(dot)ar(at)gmail(dot)com> | 
|---|---|
| To: | <pgsql-es-ayuda(at)postgresql(dot)org> | 
| Subject: | Re: existen stored procedures? | 
| Date: | 2008-10-17 15:08:38 | 
| Message-ID: | 0dc601c9306a$3f900700$140b000a@siga.frba.utn.edu.ar | 
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| Lists: | pgsql-es-ayuda | 
mil gracias, Álvaro
lo voy a probar
ks
----- Original Message ----- 
From: "Alvaro Herrera" <alvherre(at)alvh(dot)no-ip(dot)org>
To: "bajopalabra.ar" <bajopalabra(dot)ar(at)gmail(dot)com>
Cc: <pgsql-es-ayuda(at)postgresql(dot)org>
Sent: Friday, October 17, 2008 12:01 PM
Subject: Re: [pgsql-es-ayuda] existen stored procedures?
> bajopalabra.ar escribió:
>
> > el tema de la devolución de varios lotes
> > de última, lo puedo llegar a manejar en otra capa
>
> Puedes retornar SETOF refcursor en una función, y de cada cursor obtener un
> resultado diferente.  Prueba algo así:
>
> alvherre=# create or replace function refcursors () returns setof refcursor
> language plpgsql as $$
>     declare
>        cursor1 refcursor;
>        cursor2 refcursor;
>     begin
>        open cursor1 for values (1), (2), (3);
>        return next cursor1;
>        open cursor2 for values ('foo'), ('bar'), ('baz');
>        return next cursor2;
>     end;
> $$
> ;
> CREATE FUNCTION
> alvherre=# begin;
> BEGIN
> alvherre=# select * from refcursors();
>      refcursors
> --------------------
>  <unnamed portal 3>
>  <unnamed portal 4>
> (2 filas)
>
> alvherre=# fetch all from "<unnamed portal 3>";
>  column1
> ---------
>        1
>        2
>        3
> (3 filas)
>
> alvherre=# fetch all from "<unnamed portal 4>";
>  column1
> ---------
>  foo
>  bar
>  baz
> (3 filas)
>
> alvherre=# commit;
> COMMIT
>
>
> -- 
> Alvaro Herrera                 http://www.amazon.com/gp/registry/CTMLCN8V17R4
> "In a specialized industrial society, it would be a disaster
> to have kids running around loose." (Paul Graham)
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