From: Oliveiros d'Azevedo Cristina <oliveiros.cristina@marktest.pt>
To: Marcel Ruff <mr@marcelruff.info>
To: pgsql-sql@postgresql.org
Subject: Re: How change col name during query to use it in where clause
Date: Fri, 4 May 2012 13:43:37 +0100
Message-ID: <340C84580192462E94F2EF130C1C078D@marktestcr.marktest.pt> (raw)
References: <4FA3AEA9.6010401@marcelruff.info>
I'm affraid
you can't.
AFAIK,
WHERE clause is processed before the SELECT output expressions
Best,
Oliveiros
----- Original Message -----
From: "Marcel Ruff" <mr@marcelruff.info>
To: <pgsql-sql@postgresql.org>
Sent: Friday, May 04, 2012 11:25 AM
Subject: [SQL] How change col name during query to use it in where clause
> Hi,
>
> is an alias name not usable in the where clause?
>
> select EXTRACT(day from enddate::TIMESTAMP - old_enddate::TIMESTAMP) AS
> TAGE from account_h where TAGE>5;
> ERROR: column "tage" does not exist
> LINE 1: ... TAGE>5 ...
>
> Thank you
> Marcel
>
> --
> Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org)
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To: pgsql-sql@postgresql.org
Cc: oliveiros.cristina@marktest.pt, mr@marcelruff.info
Subject: Re: How change col name during query to use it in where clause
In-Reply-To: <340C84580192462E94F2EF130C1C078D@marktestcr.marktest.pt>
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