From: A. Kretschmer <andreas.kretschmer@schollglas.com>
To: pgsql-sql@postgresql.org
Subject: Re: Get different sums from the same table in one query
Date: Mon, 8 Oct 2007 13:59:06 +0200
Message-ID: <20071008115906.GD15336@a-kretschmer.de> (raw)
In-Reply-To: <a2de01dd0710080432g7700d76bkd963f29461807772@mail.gmail.com>
References: <470A0B20.40203@gmail.com>
<20071008105422.GC15336@a-kretschmer.de>
<a2de01dd0710080432g7700d76bkd963f29461807772@mail.gmail.com>
am Mon, dem 08.10.2007, um 12:32:55 +0100 mailte Peter Childs folgendes:
>
>
> On 08/10/2007, A. Kretschmer <andreas.kretschmer@schollglas.com> wrote:
>
> am Mon, dem 08.10.2007, um 12:49:04 +0200 mailte Dani Castaños folgendes:
> > Hi all!
> >
> > I want to put this three queries in only one... Take a look that the
> > only thing that changes is the message_type_id. Any suggestions??
>
> Yes, no problem, You can use UNION (ALL) for such.
>
>
>
> Not sure thats what he wants at all. Anyway Union all is going to produce a
> very slow way of doing this needing to go back to the data 3 times where as
> this only goes once.
Right, conditional statements are a proper solution for this.
Andreas
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Andreas Kretschmer
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To: pgsql-sql@postgresql.org
Cc: andreas.kretschmer@schollglas.com
Subject: Re: Get different sums from the same table in one query
In-Reply-To: <20071008115906.GD15336@a-kretschmer.de>
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