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RE: comparing null values

From: Sony kristanto <Sony_at_polyfincanggih.com>
Date: Thu, 30 Jan 2003 18:22:18 -0800
Message-ID: <F001.0053FF79.20030130182218@fatcity.com>


Hi Gary,

I wonder why you didn't use :
select * from tester2 where whatever is null;

Null values is extremely empty.

Rgrds,

Sony

> -----Original Message-----
> From: Gary Jackson [SMTP:fred_fred_1_at_hotmail.com]
> Sent: Friday, January 31, 2003 12:42 AM
> To: Multiple recipients of list ORACLE-L
> Subject: comparing null values
>
> Can anyone explain why it is that I seem unable to use 'like' and 'not
> like'
> on columns containing null values. (I am unable to find information
> regarding this on MetaLink.)
>
> For example:
>
> SQL> select * from tester2;
>
> COL1 COL2 WHATEVER
> ---- ---- --------
> 1 1 STUFF
> 2 2 STUFF
> 3 3
> 4 4
>
> SQL> select * from tester2 where whatever not like '%STU%';
> no rows selected
>
>
> My question is why does this not return the 3 & 4 columns?
>
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> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: Gary Jackson
> INET: fred_fred_1_at_hotmail.com
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Sony kristanto
  INET: Sony_at_polyfincanggih.com

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Received on Thu Jan 30 2003 - 20:22:18 CST

Original text of this message

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