Re: wired behaviour

Hello Paul,

thanks for the quick answer.

> NULL values?
Jepp, thats it.
I've supposed this but can't believe it. So NULL is something out of this
dimension :-)

Kindly regards
Lutz

>
> Met vriendelijke groet,
>
> Paul Dam
> Informatieanalist
>
>
>
>
> Amyyon
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> -----Oorspronkelijk bericht-----
> Van: pgsql-sql-owner(at)postgresql(dot)org
> [mailto:pgsql-sql-owner(at)postgresql(dot)org] Namens Lutz Steinborn
> Verzonden: vrijdag 28 november 2008 14:52
> Aan: pgsql-sql(at)postgresql(dot)org
> Onderwerp: [SQL] wired behaviour
>
> Hello,
>
> I have an problem understanding a simple query:
>
> For example I have the following:
> select count(*) from foo;
> gives me 1000
>
> select count(*) from foo where bar = 'Mr Spock';
> gives me 5
>
> select count(*) from foo where NOT bar = 'Mr Spock';
> gives me 857
>
> Why I'm not getting 955 for the last query ?
>
>
> Any idea ?
>
> Kindly regards
>
>
> Lutz
>
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