From: | "Oliveiros d'Azevedo Cristina" <oliveiros(dot)cristina(at)marktest(dot)pt> |
---|---|
To: | "Marcel Ruff" <mr(at)marcelruff(dot)info>, <pgsql-sql(at)postgresql(dot)org> |
Subject: | Re: How change col name during query to use it in where clause |
Date: | 2012-05-04 12:43:37 |
Message-ID: | 340C84580192462E94F2EF130C1C078D@marktestcr.marktest.pt |
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Lists: | pgsql-sql |
I'm affraid
you can't.
AFAIK,
WHERE clause is processed before the SELECT output expressions
Best,
Oliveiros
----- Original Message -----
From: "Marcel Ruff" <mr(at)marcelruff(dot)info>
To: <pgsql-sql(at)postgresql(dot)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(at)postgresql(dot)org)
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