Date: Mon, 23 Nov 2015 18:22:16 +0100
From: Andreas Kretschmer <akretschmer@spamfence.net>
To: pgsql-sql@postgresql.org
Subject: Re: Select values by interval
Message-ID: <20151123172216.GA5760@tux>
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Markus Wolters <MarkusWolters@gmx.de> wrote:

> Hi all,
> 
> I have a table with value and timestamp columns. What I like to do (but am unable to find a solution) is to select the last(value) timestamp combination in every X minute interval where timestamp is between N and M. Is this possible with pgsql?
> 

maybe somethink like

select *, row_number() over (partition by to_char(timestamp, 'yyyy-mm-dd
hh24:mm') order by ... desc) ...


and then pick all with row_number = 1

*untested* 


Andreas
-- 
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect.                              (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly."   (unknown)
Kaufbach, Saxony, Germany, Europe.              N 51.05082°, E 13.56889°


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