From: Achilleus Mantzios <achill@matrix.gatewaynet.com>
To: Andreas Schlegel <schlegel@software.b.uunet.de>
Cc: pgsql <pgsql-sql@postgresql.org>
Subject: Re: Error with DISTINCT and AS keywords
Date: Wed, 10 Jul 2002 15:25:56 +0300 (EEST)
Message-ID: <Pine.LNX.4.44.0207101525330.23339-100000@matrix.gatewaynet.com> (raw)
In-Reply-To: <3D2C2140.7060003@software.b.uunet.de>
On Wed, 10 Jul 2002, Andreas Schlegel wrote:
> Hi,
>
> I need some help to let this sql statement run with Postgres 7.2.1
>
> Doesn't work:
> select DISTINCT tnr, titel, 'TEST' AS testcol from tTitel;
> ERROR: Unable to identify an ordering operator '<' for type 'unknown'
> Use an explicit ordering operator or modify the query
Do it as
select DISTINCT tnr, titel, 'TEST'::text AS testcol from tTitel;
>
> If I remove the DISTINCT keyword it works:
> select tnr, titel, 'TEST' AS testcol from tTitel;
>
>
>
> Greetings,
> Andreas
>
>
>
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>
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>
--
Achilleus Mantzios
S/W Engineer
IT dept
Dynacom Tankers Mngmt
tel: +30-10-8981112
fax: +30-10-8981877
email: achill@matrix.gatewaynet.com
mantzios@softlab.ece.ntua.gr
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To: pgsql-sql@postgresql.org
Cc: achill@matrix.gatewaynet.com, schlegel@software.b.uunet.de
Subject: Re: Error with DISTINCT and AS keywords
In-Reply-To: <Pine.LNX.4.44.0207101525330.23339-100000@matrix.gatewaynet.com>
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