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Home -> Community -> Mailing Lists -> Oracle-L -> RE: function index for like '%string%'
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
>
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>Author: Hillman, Alex
> INET: Alex.Hillman_at_usmint.treas.gov
>
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-- Please see the official ORACLE-L FAQ: http://www.orafaq.com -- Author: Rachel Carmichael INET: carmichr_at_hotmail.com Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051 San Diego, California -- Public Internet access / Mailing Lists -------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing).Received on Fri Jun 01 2001 - 19:55:51 CDT
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