Re: COALESCE in ORDER BY...

From: Andreas Schmitz <andreas(dot)schmitz(at)as-dataservice(dot)de>
To: Terry Yapt <pgsql(at)technovell(dot)com>
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: COALESCE in ORDER BY...
Date: 2003-05-17 17:14:09
Message-ID: 3EC66DE1.1090705@as-dataservice.de
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Terry Yapt wrote:

>www=> SELECT 10 AS first ORDER BY COALESCE(first,0) DESC;
>ERROR: Attribute "first" not found
>
>Thanks in advance..
>
>
Perhaps, this is a bug, but I have a workarround for you till this is
clariefied:

SELECT *
FROM (SELECT 10 AS FIRST) AS vtbl
ORDER BY COALESCE(vtbl.first,0) DESC;

(Tested with 7.3.2)

Best regards
--
Andreas Schmitz
AS-DataService <http://www.as-dataservice.de>
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Email: andreas(dot)schmitz(at)as-dataservice(dot)de
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