Re: function index for like '%string%'

On Fri, 1 Jun 2001,Joseph S. Testa scribbled on the wall in glitter crayon:

->i spent about a week about 6 months ago looking for something to fill
->that possibility to no avail.

dumb question would a contex... oh excuse me InterMedia index work?

->
->joe
->Rachel Carmichael wrote:
->>
->> she knows why it isn't being used. What Suzy wants to know (and I do too,
->> because I have a similar situation) is if there is a way to create an index
->> that will let you search with the like clause.
->>
->> Unfortunately my gut instinct is that you can't make Oracle do that
->>
->> >From: "Hillman, Alex" <Alex.Hillman_at_usmint.treas.gov>
->> >Reply-To: ORACLE-L_at_fatcity.com
->> >To: Multiple recipients of list ORACLE-L <ORACLE-L_at_fatcity.com>
->> >Subject: RE: function index for like '%string%'
->> >Date: Fri, 01 Jun 2001 14:11:08 -0800
->> >
->> >index is not used because you have leading % in the like predicate.
->> >
->> >Alex Hillman
->> >
->> >-----Original Message-----
->> >Sent: Friday, June 01, 2001 5:09 PM
->> >To: Multiple recipients of list ORACLE-L
->> >
->> >
->> >
->> >I've created a function index for lower(column_name). However the query
->> >does
->> >a like comparison rather than equality so the index isn't used. Is there a
->> >way to create a function index for this?
->> >
->> >Here's the index and query:
->> >
->> >create index fx1_auth_users
->> >on auth_users (lower(current_email)
->> >tablespace app01_midx ;
->> >
->> >select current_email from auth_users
->> >where lower(current_email) like '%datsit.com%' ;
->> >
->> >Thanks much,
->> >Suzy
->> >--
->> >Please see the official ORACLE-L FAQ: http://www.orafaq.com
->> >--
->> >Author: Suzy Vordos
->> > INET: lvordos_at_datsit.com
->> >
->> >Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
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->> >also send the HELP command for other information (like subscribing).
->> >--
->> >Please see the official ORACLE-L FAQ: http://www.orafaq.com
->
->
->
->

--
Bill "Shrek" Thater   Certifiable ORACLE DBA
Telergy, Inc.            thaterw_at_telergy.net
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
You gotta program like you don't need the money,
You gotta compile like you'll never get hurt,
You gotta run like there's nobody watching,
It's gotta come from the heart if you want it to work.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Thater, William
  INET: ThaterW_at_telergy.net

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