From: T E Schmitz <mailreg@numerixtechnology.de>
To: Martin Knipper <martin@mk-os.de>
To: pgsql-sql@postgresql.org
Subject: Re: COUNT(*) to find records which have a certain number of
Date: Mon, 27 Sep 2004 10:45:01 +0100
Message-ID: <4157E11D.2030400@numerixtechnology.de> (raw)
In-Reply-To: <414F08FD.3080200@mk-os.de>
References: <414F02FF.8000603@numerixtechnology.de>
<414F08FD.3080200@mk-os.de>
Hallo Martin,
Martin Knipper wrote:
> Am 20.09.2004 18:19 schrieb T E Schmitz:
>
>>>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;
>
Sorry, no, this doesn't work. It definitely doesn't return the required
resultset. It just returns all BRAND_NAME,MODEL_NAME for all Models that
have a Type with TYPE_NAME='xyz'.
--
Regards/Gruß,
Tarlika Elisabeth Schmitz
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To: pgsql-sql@postgresql.org
Cc: mailreg@numerixtechnology.de, martin@mk-os.de
Subject: Re: COUNT(*) to find records which have a certain number of
In-Reply-To: <4157E11D.2030400@numerixtechnology.de>
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