Message-ID: <414F08FD.3080200@mk-os.de>
Date: Mon, 20 Sep 2004 18:44:45 +0200
From: Martin Knipper <martin@mk-os.de>
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To: pgsql-sql@postgresql.org
Subject: Re: COUNT(*) to find records which have a certain number of
References: <414F02FF.8000603@numerixtechnology.de>
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Am 20.09.2004 18:19 schrieb T E Schmitz:

> I figured it eventually. (The only thing I don't know is where to put
> the ORDER BY.)
> 
> 
>>I want to select only those BRAND/MODEL combinations, where the MODEL 
>>has more than one TYPE, but only where one of those has TYPE_NAME='xyz'.
>>I am not interested in MODELs with multiple TYPEs where none of them are 
>>called 'xyz'.
> 
> 

Try this:

select b.brand_name,m.model_name,count(*) from model m inner join
brand b on m.brand_fk=b.brand_pk inner join type t on
m.model_pk=t.model_fk where t.type_name='xyz' group by
b.brand_name,m.model_name having count(m.model_name)>0;

Greetings,

Martin

-- 
Martin Knipper
www  : http://www.mk-os.de
Mail : knipper@mk-os.de