From: A. Kretschmer <andreas.kretschmer@schollglas.com>
To: pgsql-sql@postgresql.org
Subject: Re: Need magic for a moving statistic
Date: Fri, 2 Oct 2009 15:10:36 +0200
Message-ID: <20091002131036.GA25746@a-kretschmer.de> (raw)
In-Reply-To: <4AC5F647.8030204@gmx.net>
References: <4AC55231.2080008@gmx.net>
<20091002052916.GA22496@a-kretschmer.de>
<4AC5F647.8030204@gmx.net>
In response to Andreas :
>
> 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.
Yes, sure. Use ((d-'2009-10-02'::date)/14) instead for order. My fault.
>
> This is still the way to handle the periodity without pulling out some
> external skript language.
> Thanks for the reply. :)
Glad to help you ;-)
--
Andreas Kretschmer
Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header)
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To: pgsql-sql@postgresql.org
Cc: andreas.kretschmer@schollglas.com
Subject: Re: Need magic for a moving statistic
In-Reply-To: <20091002131036.GA25746@a-kretschmer.de>
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