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From: Fatih Cerit <fatih@intersan.com.tr>
To: pgsql-sql@postgresql.org
Subject: substr or char_length problem
Date: Fri, 17 Jun 2005 13:01:15 +0300
Message-ID: <014a01c57323$90b72b20$b8e58bd5@cerit> (raw)

Dear ALL

I have a problem with function substr or char_length or both. I guery A2 and 
it works fine. But sometimes gives 'ERROR:  negative substring length not 
allowed'. When I test many many times with diffrent values, never gives 
error. Sample table and query below.



A1              A2
-------------------
1               1957
2               197
3               19
4
5               NULL
6               1
7               195


Select * from tbl_xxx where 
tbl_xxx.A2=substr('196895588454554545454',0,char_length(tbl_xxx.A2)+1);


Thanks
Fatih Cerit 




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