Re: SELECT statement...

From: Arul kumar <rakumar_at_mahindrabt.com>
Date: Mon, 25 Feb 2002 23:58:19 -0800
Message-ID: <F001.0041855D.20020225235819@fatcity.com>

Hi Rich,

I doubt any NULL value being checked in the WHERE CLAUSE...

as u will be knowing a NULL is not equal to another NULL.... in oracle !!

Just try applying NVL on such possible columns ....

Hope this may help u.

regards,
Arul.

Richard Huntley wrote:

> I'm encountering something very strange...has anyone ever encountered a
> simple select
> statement that found no data such as:
>
> SELECT COUNT(*)
> FROM student_grps s, grps g
> where s.stuid = :new_stuid
> and g.gid = s.gid;
>
> This code is inside a before insert row level trigger and the select works
> fine
> at an SQL prompt but encounters a NO_DATA_FOUND exception when the trigger
> fires.
> Any ideas at all?? How can count(*) encounter this??
>
> TIA,
> Rich
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Richard Huntley
> INET: rhuntley@mindleaders.com
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.com
-- 
Author: Arul kumar
  INET: rakumar_at_mahindrabt.com

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Received on Tue Feb 26 2002 - 01:58:19 CST