Re: how does NOT work?

From: tony <tony(at)animaproductions(dot)com>
To: "Nigel J(dot) Andrews" <nandrews(at)investsystems(dot)co(dot)uk>
Cc: postgres list <pgsql-general(at)postgresql(dot)org>
Subject: Re: how does NOT work?
Date: 2002-04-24 15:30:38
Message-ID: 1019662239.22848.39.camel@vaio
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On Wed, 2002-04-24 at 17:22, Nigel J. Andrews wrote:

> > select count(*) from individu
> >
> > count
> > 18417
> >
> > select count(*) from individu where type2 like 'a%'
> >
> > count
> > 12619
> >
> > select count(*) from individu where type2 not like 'a%'
> >
> > count
> > 81
> >
> > Clues?
>
> NULLs?

the cells are either empty or contain a word that doesn't start with "a"
or a -

If I do it with two letters it works just fine so I guess I'll just put
another "a" in front

Cheers

Tony Grant

--
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