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Re: ** SQL WHERE clause order

From: Wolfgang Breitling <breitliw_at_centrexcc.com>
Date: Tue, 04 Nov 2003 14:04:25 -0800
Message-ID: <F001.005D5929.20031104140425@fatcity.com>


Why do you want a certain predicate evaluated first?

At 02:34 PM 11/4/2003, you wrote:
>Hi,
> In a SQL statement I want a certain where clause to be done first. Is
> it enough to list it first as follows or do I (and can I) do something
> else to make it get checked first before other WHERE/AND clause are
> looked at. Thanks :
>
>SELECT emp_id FROM emp
>WHERE select_sen_emp_chk_first = 'Y'
>AND dept = :dept
>AND salary > :min_sal

Wolfgang Breitling
Oracle7, 8, 8i, 9i OCP DBA
Centrex Consulting Corporation
http://www.centrexcc.com

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Author: Wolfgang Breitling
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Received on Tue Nov 04 2003 - 16:04:25 CST

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