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RE: Avoiding full table scan

From: Goulet, Dick <DGoulet_at_vicr.com>
Date: Thu, 09 Oct 2003 09:54:30 -0800
Message-ID: <F001.005D2934.20031009095430@fatcity.com>


Jack,  

    In a recent copy of SELECT magazine there is a discussion in defense of full table scans. I believe you might find it VERY interesting. Although I was aware of some of what the author spoke he put it in a vein that makes extreme sense.  

Dick Goulet
Senior Oracle DBA
Oracle Certified 8i DBA

-----Original Message-----
Sent: Thursday, October 09, 2003 10:49 AM To: Multiple recipients of list ORACLE-L

Hi All,

I wish to avoid a full tablescan on the following data

V. Zanen
Zanen
Van Zanen
...
...
...

Lot's more data

Select * from table where upper(name) like '%ZANEN%'

I could create a function based index on upper(name) but this does not take care of the % and like operator.

Oracle has this (I believe it's called) context stuff that you can index varchar fields etc. Is this the (only possible?) way to go??

TIA Jack

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Author: Goulet, Dick
  INET: DGoulet_at_vicr.com

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Received on Thu Oct 09 2003 - 12:54:30 CDT

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