From: | "Michael Richards" <michael(at)fastmail(dot)ca> |
---|---|
To: | tgl(at)sss(dot)pgh(dot)pa(dot)us |
Cc: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: finding a maximum or minimum sum |
Date: | 2001-06-11 19:03:29 |
Message-ID: | 3B251601.000107.67770@frodo.searchcanada.ca |
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Thread: | |
Lists: | pgsql-sql |
Puuuurfect! This is exactly what I needed. Didn't know postgres
supported subselects like that. Thanks.
-Michael
> select min(amtsum), max(amtsum), avg(amtsum)
> from (select sum(amount) as amtsum from payments group by userid)
> ss;
>
> In prior versions you'd need to do the initial select into a temp
> table and then select min/max/avg from that.
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>From pgsql-sql-owner(at)postgresql(dot)org Mon Jun 11 19:24:18 2001
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Date: Mon, 11 Jun 2001 16:23:29 -0700 (PDT)
From: David Olbersen <dave(at)slickness(dot)org>
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To: =?iso-8859-1?q?Mart=EDn=20Marqu=E9s?= <martin(at)bugs(dot)unl(dot)edu(dot)ar>
cc: pgsql sql Mailing List <pgsql-sql(at)postgresql(dot)org>,
<pgsql-general(at)postgresql(dot)org>
Subject: Re: ORDER BY what?
In-Reply-To: <01061111193103(dot)29653(at)bugs>
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On Mon, 11 Jun 2001, Martn Marqus wrote:
> My question is: "How can I write an ORDER BY statment so that it's ordered by
> the amount of matches it gets?"
Your question is a bit unclear, what is "it"?
Specifically, what are the "it's" that are to be ordered, and which "it" gets
matches?
-- Dave
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