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RE: Slow running Query.

From: Lex de Haan <lex.de.haan_at_naturaljoin.nl>
Date: Tue, 22 Jun 2004 18:45:57 +0200
Message-ID: <JFEEIGBIDOCCDALDIPLNGENCCEAA.lex.de.haan@naturaljoin.nl>


Juan,

unfortunately sum(nvl(column,0)) is not equivalent to nvl(sum(column),0)...

Kind regards,
Lex.



visit my website at http://www.naturaljoin.nl

-----Original Message-----

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Juan Carlos Reyes Pacheco
Sent: Tuesday, June 22, 2004 17:15
To: oracle-l_at_freelists.org
Subject: RE: Slow running Query.

Hi, I will do t he following

Try creating function indexes on composed columns you are queryin and tellme if this improves something
For example you are using as_date in the where column, but you don't have a index on substr(ca_date,1,4,....

Only to avoid unncesary plsql work
1. instead sum(nvl(column,0)) I'll use nvl(sum(column),0 2. instead of decode use case


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Received on Tue Jun 22 2004 - 11:43:13 CDT

Original text of this message

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