From: kijato <kijato@gmail.com>
To: pgsql-sql@postgresql.org
Subject: Re: usernames of a group from SQL
Date: Sun, 21 May 2006 10:04:30 +0200
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On Friday May 19 2006 12.04, Achilleus Mantzios wrote:
>
> SELECT u.usename from pg_user u,pg_group g where u.usesysid = any
> (g.grolist) and g.groname='osztatlan_users';
>

I'd like to make a function with this SQL:

CREATE FUNCTION kodok.group_users(group_name "varchar")
RETURNS SETOF "varchar" AS
$BODY$
SELECT pg_user.usename
FROM pg_user, pg_group
WHERE usesysid = any (pg_group.grolist) AND pg_group.groname=$1;
$BODY$
LANGUAGE 'sql' VOLATILE;

But I get the next error message:

ERROR:  return type mismatch in function declared to return character 
varying
DETAIL:  Actual return type is name.
CONTEXT:  SQL function "group_users"

At the moment, I don't understand what is the problem, and what I need 
to do now...?

Thanks,
kjt

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