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Message-ID: <47874CEB.3010803@fmed.uba.ar>
Date: Fri, 11 Jan 2008 08:03:07 -0300
From: Gerardo Herzig <gherzig@fmed.uba.ar>
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To: Daniel Caune <daniel.caune@ubisoft.com>
CC: pgsql-sql@postgresql.org
Subject: Re: SQL stored function inserting and returning data in a row.
References: <1E293D3FF63A3740B10AD5AAD88535D206F416D1@UBIMAIL1.ubisoft.org>
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Daniel Caune wrote:

>Hi,
>
>Is there any way to define a SQL stored function that inserts a row in a
>table and returns the serial generated?
>
>CREATE TABLE matchmaking_session
>(
>  session_id bigint NOT NULL DEFAULT
>nextval('seq_matchmaking_session_id'),
>  ...
>);
>
>CREATE FUNCTION create_matchmaking_sesssion(...)
>  RETURNS bigint
>AS $$
>  INSERT INTO matchmaking_session(...)
>    VALUES (...)
>    RETURNING session_id;
>$$ LANGUAGE SQL;
> 
>2008-01-10 22:08:48 EST ERROR:  return type mismatch in function
>declared to return bigint
>2008-01-10 22:08:48 EST DETAIL:  Function's final statement must be a
>SELECT.
>2008-01-10 22:08:48 EST CONTEXT:  SQL function
>"create_matchmaking_sesssion"
>
>  
>
What about
$$
INSERT INTO .... ;
select currval('seq_matchmaking_session_id');
$$ language sql;

?