Date: Sat, 14 Jun 2003 21:39:23 -0300 (ADT)
From: The Hermit Hacker <scrappy@postgresql.org>
To: deststar <deststar@blueyonder.co.uk>
Cc: pgsql-sql@postgresql.org
Subject: Re: WHERE of an AGGREGATE ...
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Message-ID: <20030614213902.M27289@hub.org>
References: <20030614202831.U27289@hub.org>
	<1055635083.2816.6.camel@localhost.localdomain>
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perfect, its one of those that I've used so rarely, I never thought about
it ... thanks :)


On Sat, 15 Jun 2003, deststar wrote:

> Isn't that what the having clause is about?
> - Stuart
>
> On Sun, 2003-06-15 at 00:31, The Hermit Hacker wrote:
> > I have a query that looks like:
> >
> >   SELECT SUM(bytes) AS traffic
> >     FROM traffic_table
> > GROUP BY ip;
> >
> > I want to narrow that SELECT down to a subset, like:
> >
> >    SELECT SUM(bytes) AS traffic
> >      FROM traffic_table
> >     WHERE traffic < ( 100 * 1024 * 1024 )
> >  GROUP BY ip;
> >
> > which, of course, won't work, cause I need to do the GROUP BY before I do
> > the WHERE ... but there has to be a way of coding that so that it does
> > work :(
> >
> > I'm overlooking something obvious here ... I think?
> >
> > Thanks ...
> >
> > Marc G. Fournier                   ICQ#7615664               IRC Nick: Scrappy
> > Systems Administrator @ hub.org
> > primary: scrappy@hub.org           secondary: scrappy@{freebsd|postgresql}.org
> >
> > ---------------------------(end of broadcast)---------------------------
> > TIP 9: the planner will ignore your desire to choose an index scan if your
> >       joining column's datatypes do not match
>
>

Marc G. Fournier                   ICQ#7615664               IRC Nick: Scrappy
Systems Administrator @ hub.org
primary: scrappy@hub.org           secondary: scrappy@{freebsd|postgresql}.org