From: Andreas <maps.on@gmx.net>
To: A. Kretschmer <andreas.kretschmer@schollglas.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: Need magic for a moving statistic
Date: Fri, 02 Oct 2009 14:47:03 +0200
Message-ID: <4AC5F647.8030204@gmx.net> (raw)
In-Reply-To: <20091002052916.GA22496@a-kretschmer.de>
References: <4AC55231.2080008@gmx.net>
<20091002052916.GA22496@a-kretschmer.de>
A. Kretschmer schrieb:
> [...] Or simpler:
>
> test=*# select ((d-'2009-10-02'::date)/14) || '. period' as period, sum(value) from foo group by 1;
>
This is tricky, because you use a text-column to sort but need numerical
sorting since there will be more than 0-9 periods.
This is still the way to handle the periodity without pulling out some
external skript language.
Thanks for the reply. :)
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To: pgsql-sql@postgresql.org
Cc: maps.on@gmx.net, andreas.kretschmer@schollglas.com
Subject: Re: Need magic for a moving statistic
In-Reply-To: <4AC5F647.8030204@gmx.net>
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