Re: Optimize LIKE '%abc%' queries
Posted by:
Apachez
Date: August 10, 2006 12:41PM
Hmpf, that didnt seem to give the boost I hoped for. For some queries it was faster but for others it was way slower than a traditional "LIKE '%abc%'".
The main problem I guess is that you need to have an additional "GROUP BY wordid" because otherwise a word such as "1abc1abc123" will return two hits from this permuted table (both as "abc1abc123" and "abc123").
Anyone else in here who might have an idea regarding this topic ?
Subject
Views
Written By
Posted
15730
August 04, 2006 02:12PM
6915
August 04, 2006 02:30PM
6310
August 04, 2006 02:36PM
5886
August 04, 2006 02:56PM
6916
August 04, 2006 03:35PM
Re: Optimize LIKE '%abc%' queries
5438
August 10, 2006 12:41PM
4763
August 10, 2006 01:54PM
5596
August 10, 2006 04:12PM
4106
August 10, 2006 04:27PM
Sorry, you can't reply to this topic. It has been closed.
Content reproduced on this site is the property of the respective copyright holders.
It is not reviewed in advance by Oracle and does not necessarily represent the opinion
of Oracle or any other party.