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wired behaviour

From: Lutz Steinborn <l(dot)steinborn(at)4c-ag(dot)de>
To: pgsql-sql(at)postgresql(dot)org
Subject: wired behaviour
Date: 2008-11-28 13:51:37
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-sql

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



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