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Message from discussion wildcard search and full tablescans
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StefanKapitza  
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 More options Dec 12 2006, 2:31 am
Newsgroups: comp.databases.oracle.server
From: "StefanKapitza" <skapi...@volcanomail.com>
Date: 11 Dec 2006 23:31:45 -0800
Local: Tues, Dec 12 2006 2:31 am
Subject: Re: wildcard search and full tablescans
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wagen...@yahoo.com wrote:
> Oracle10g 10.2.0.1

> select * from <table_name> where <column_name> like '%abc%';

> does not use the index and does a full tablescan (guess this is the
> expected behaviour as per explain plan).

> Any suggestions as to how to use the index (index hint didn't help), IF
> possible or other alternatives.

> thanks

you could try

http://www.dominicgiles.com/technicalpapers.html

(the Article about Bitmap Index)

regards

s.kapitza


 
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