Date: Wed, 3 May 2006 00:13:40 +0300
From: Volkan YAZICI <yazicivo@ttnet.net.tr>
To: Everton =?iso-8859-1?Q?Lu=EDs?= Berz <everton.berz@gmail.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: Sorting aggregate column contents
Message-ID: <20060502211340.GA188@alamut>
References: <4457C86F.8040303@gmail.com>
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On May 02 06:00, Everton Luís Berz wrote:
> Is it possible to sort the content of an aggregate text column?
> 
> Query:
> select s.name, ag_concat(c.name) from state s
> inner join city c on (c.idstate = s.idstate)
> group by s.name
> order by s.name;

IMHO, you can receive results ordered by using a subselect:

SELECT T.s_name, ag_concat(T.c_name)
  FROM (SELECT s.name, c.name
          FROM state AS s
          INNER JOIN city AS c ON (c.idstate = s.idstate)
          ORDER BY s.name, c.name) AS T (s_name, c_name)
  GROUP BY T.s_name;


Regards.