Re: Grouping by date range

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Bruno Wolff III <bruno(at)wolff(dot)to>
Cc: Ron Johnson <ron(dot)l(dot)johnson(at)cox(dot)net>, PgSQL General ML <pgsql-general(at)postgresql(dot)org>
Subject: Re: Grouping by date range
Date: 2003-08-20 19:51:38
Message-ID: 16855.1061409098@sss.pgh.pa.us
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Bruno Wolff III <bruno(at)wolff(dot)to> writes:
> On Wed, Aug 20, 2003 at 13:44:59 -0500,
> Ron Johnson <ron(dot)l(dot)johnson(at)cox(dot)net> wrote:
>> The GROUP BY does implicit sorting, so an ORDER BY on the exact same
>> column(s) as the GROUP BY is redundant.

> That is an implementation detail, not a promise. With hashed aggregates
> in 7.4, you might find this isn't true.

s/might/will/

regards, tom lane

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