Return-Path: Received: from ensim.rackshack.net (root@localhost) by orafaq.net (8.11.6/8.11.6) with ESMTP id h7K290m29267 for ; Tue, 19 Aug 2003 21:09:00 -0500 X-ClientAddr: 66.27.56.213 Received: from www2.fatcity.com (rrcs-west-66-27-56-213.biz.rr.com [66.27.56.213]) by ensim.rackshack.net (8.11.6/8.11.6) with ESMTP id h7K290p29261 for ; Tue, 19 Aug 2003 21:09:00 -0500 Received: (from root@localhost) by www2.fatcity.com (8.11.6/8.11.6) id h7JNfPY01156 for oracle-l@orafaq.net; Tue, 19 Aug 2003 16:41:25 -0700 Received: by fatcity.com (05-Jun-2003/v1.0g-b73/bab) via fatcity.com id 005CB9B1; Tue, 19 Aug 2003 16:34:24 -0800 Message-ID: Date: Tue, 19 Aug 2003 16:34:24 -0800 To: Multiple recipients of list ORACLE-L X-Comment: Oracle RDBMS Community Forum X-Sender: Scott Lamb Sender: ml-errors@fatcity.com Reply-To: ORACLE-L@fatcity.com Errors-To: ML-ERRORS@fatcity.com From: Scott Lamb Subject: Re: select strings with '_' in it Organization: Fat City Network Services, San Diego, California X-ListServer: v1.0g, build 73; ListGuru (c) 1996-2003 Bruce A. Bergman Precedence: bulk Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Tanel Poder wrote: > Hi! > > I think translate is overkill here. > > Use: > > select col from tab where col like 'v\_lan' escape '\'; vs > Select col1 from table > where translate(col1,'_','#') like 'v#lan%' > / Not only is the escape method cleaner, it's much more efficient. Unless you have an index on translate(col1,'_','#') (unlikely), that query will always result in a sequential scan. Ugh. -- Please see the official ORACLE-L FAQ: http://www.orafaq.net -- Author: Scott Lamb INET: slamb@slamb.org Fat City Network Services -- 858-538-5051 http://www.fatcity.com San Diego, California -- Mailing list and web hosting services --------------------------------------------------------------------- To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru@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).