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How change col name during query to use it in where clause - Mailing list pgsql-sql

From Marcel Ruff
Subject How change col name during query to use it in where clause
Date
Msg-id 4FA3AEA9.6010401@marcelruff.info
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Responses Re: How change col name during query to use it in where clause  (Andreas Kretschmer <andreas@a-kretschmer.de>)
Re: How change col name during query to use it in where clause  (Thomas Kellerer <spam_eater@gmx.net>)
List pgsql-sql
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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

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