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Re: select strings with '_' in it

From: Scott Lamb <slamb_at_slamb.org>
Date: Tue, 19 Aug 2003 16:34:24 -0800
Message-ID: <F001.005CB9B1.20030819163424@fatcity.com>


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_at_slamb.org

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Received on Tue Aug 19 2003 - 19:34:24 CDT

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