Re: ** SQL WHERE clause order

Then put it in procedural logic instead of into the SQL. SQL is a set (or more precisely bag) oriented language. You describe the set by its attributes, NOT by the steps to create it.

At 10:24 AM 11/6/2003, you wrote:
>Wolfgang,
> I think you understand by now : I want a certain predicate evaluated
> first because it has a program variable :select_sen_emp_chk_first and I
> want it checked before going to the check dept or salary since that will
> need a table access. Thank You.
>
>Wolfgang Breitling <breitliw_at_centrexcc.com> wrote:
>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

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

-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Wolfgang Breitling
  INET: breitliw_at_centrexcc.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB ORACLE-L
(or the name of mailing list you want to be removed from).  You may
also send the HELP command for other information (like subscribing).