----- Original Message -----
From: "Wes James" <compte...@gmail.com>
To: <pgsql-sql@postgresql.org>
Sent: Friday, June 04, 2010 2:30 PM
Subject: Re: [SQL] sum an alias
On Thu, Jun 3, 2010 at 11:54 PM, A. Kretschmer
<andreas.kretsch...@schollglas.com> wrote:
In response to Wes James :
In the statement:
select
MAX(page_count_count) - MIN(page_count_count) as day_tot,
MAX(page_count_count) as day_max, sum(MAX(page_count_count) -
MIN(page_count_count)) as tot,
page_count_pdate
from page_count
group by page_count_pdate order by page_count_pdate
Is there a way to do sum(day_tot) also in the same statement?
You can use a nested SELECT.
Is there some reason preventing you from doing that?
Why don't you do something like
SELECT SUM(day_tot)
FROM (
select
MAX(page_count_count) - MIN(page_count_count) as day_tot,
MAX(page_count_count) as day_max,
page_count_pdate
from page_count
group by page_count_pdate
order by page_count_pdate );
Maybe I 'm misunderstanding the background of what you want to do
Best,
Oliveiros
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