Re: BUG #4422: select ... where ... NOT EXISTS / NOT IN

From: hubert depesz lubaczewski <depesz(at)depesz(dot)com>
To: vasile <vasile(at)gmail(dot)com>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #4422: select ... where ... NOT EXISTS / NOT IN
Date: 2008-09-17 15:49:02
Message-ID: 20080917154902.GB22210@depesz.com
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On Wed, Sep 17, 2008 at 02:53:51PM +0000, vasile wrote:
> I have this 2 similar queries.
>
> Why the 1st query is returning 1000+ rows and the 2nd one no rows ?
> The col1 is not empty in both tables.

there is no bug.
check this:

http://www.depesz.com/index.php/2008/08/13/nulls-vs-not-in/

Best regards,

depesz

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