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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