On Nov 28, 2008, at 8:51 AM, Lutz Steinborn wrote:
> 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 ?
Do you happen to have any NULL values on the field bar??
Ries