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From "Greg Monroe" <Greg.Mon...@DukeCE.com>
Subject RE: Sybase LIKE clause underscore wildcard problem
Date Tue, 19 Sep 2006 17:55:15 GMT
Why do you need to escape the '_'?  According to the SQL
Standard (92 and on) it's a valid character in identifiers.

Greg 

> -----Original Message-----
> From: Umesh Wagle [mailto:Umesh.Wagle@sos.sungard.com] 
> Sent: Tuesday, September 19, 2006 8:49 AM
> To: torque-dev@db.apache.org; torque-user@db.apache.org
> Subject: Sybase LIKE clause underscore wildcard problem
> 
> Hello Torque Users/Developers,
> 
>  
> 
> Greetings!
> 
>  
> 
> I have a workable system with MySQL 4.1  as a database and 
> using Torque 3.2. Everything works fine there. I am trying to 
> port the system to a Sybase 12.5 database.
> 
> In one of my module I have a query formed as shown below: 
> 
>  
> 
>  
> 
> SELECT  * FROM CSFieldRegistry 
> 
>  
> 
> WHERE CSFieldRegistry.Name LIKE 'CSCLIENT\_%' 
> 
>  
> 
> AND CSFieldRegistry.CustomField=1 
> 
> AND CSFieldRegistry.Active=1 
> 
> AND CSFieldRegistry.Editable=1 
> 
> AND CSFieldRegistry.CSFirmID=10000021
> 
>  
> 
> Please observe the LIKE clause in the above query. It works 
> fine on MySQL as MySQL knows that a backslash (\) is an 
> escape sequence for the underscore (_)
> 
>  
> 
> But the query fails on Sybase as Sybase expects the query in 
> the following form.
> 
>  
> 
> SELECT  * FROM CSFieldRegistry 
> 
>  
> 
> WHERE CSFieldRegistry.Name LIKE 'CSCLIENT\_%'  escape '\' 
> 
>  
> 
> AND CSFieldRegistry.CustomField=1 
> 
> AND CSFieldRegistry.Active=1 
> 
> AND CSFieldRegistry.Editable=1 
> 
> AND CSFieldRegistry.CSFirmID=10000021
> 
>  
> 
> Please observe the LIKE clause. It needs to suffix it with an 
> escape '\'
> keyword.
> 
>  
> 
> It becomes a little difficult to have a approach which will 
> work on both the databases. Sybase expects ESCAPE and MySQL 
> works fine with a backslash '\.'
> 
> Sybase will not treat '\' as a default escape sequence 
> whereas MySQL will.
> 
>  
> 
> It would be of great help if you could guide me with a 
> resolution/approach which will make the query work on both 
> the databases (MySQL and Sybase)
> 
>  
> 
> Thanks for your help.
> 
>  
> 
> Cheers,
> 
> Umesh
> 
>  
> 
>  
> 
> ******************
> 
> Umesh Wagle * Module Lead * SunGard Offshore services 
> (India), Meridian Plaza,Sr.No. 108/8/1 + 2/1, S.B.  Road, 
> Pune - 411053, India 
> 
> Direct Tel : +91-20-25606197  * Main Tel.: +91-20-25606000 *
> Fax.:+91-20-25606222  * umesh.wagle@SOS.SunGard.com * 
> www.sungard.com <http://www.sungard.com/> 
> 
>  
> 
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> 
> *******************
> 
>  
> 
> 

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