function index for like '%string%'

From: Suzy Vordos <lvordos_at_datsit.com>
Date: Fri, 01 Jun 2001 13:52:35 -0700
Message-ID: <F001.003189FD.20010601130858@fatcity.com>

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
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 - 15:52:35 CDT