RE: Slow running Query.
- From: "Lex de Haan" <lex.de.haan@xxxxxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 22 Jun 2004 18:45:57 +0200
Juan,
unfortunately sum(nvl(column,0)) is not equivalent to nvl(sum(column),0)...
Kind regards,
Lex.
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visit my website at http://www.naturaljoin.nl
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-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Juan Carlos Reyes
Pacheco
Sent: Tuesday, June 22, 2004 17:15
To: oracle-l@xxxxxxxxxxxxx
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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