From: jasiek@klaster.net
To: Rudi Starcevic <rudi@oasis.net.au>
Cc: pgsql-sql@postgresql.org
Subject: Re: Count equals 0
Date: Tue, 18 Mar 2003 12:37:22 +0100
Message-ID: <20030318113722.GA16600@serwer.skawsoft.com.pl> (raw)
In-Reply-To: <3E76BCB9.9070603@oasis.net.au>
References: <3E76BCB9.9070603@oasis.net.au>
On Tue, Mar 18, 2003 at 04:29:13PM +1000, Rudi Starcevic wrote:
<cut>
> What I would like to see is something like:
>
> site a : 0
> site b : 3
> site c : 6
<cut>
Maybe something like this:
select um.site_name,
count(*)-sum(case when usm.cus_id is null then 1 else 0 end) as total
from user_main um
left_join user_sys_messages usm using (cus_id)
group by um.site_name
order by um.site_name;
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To: pgsql-sql@postgresql.org
Cc: jasiek@klaster.net, rudi@oasis.net.au
Subject: Re: Count equals 0
In-Reply-To: <20030318113722.GA16600@serwer.skawsoft.com.pl>
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