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help / color / mirror / Atom feedFrom: Karsten Hilbert <Karsten.Hilbert@gmx.net>
To: pgsql-sql@postgresql.org
Subject: Re: Most recent row
Date: Fri, 5 May 2017 10:32:21 +0200
Message-ID: <20170505083220.wxdqm3bpwfo2dgre@hermes.hilbert.loc> (raw)
In-Reply-To: <201705050925.04194.gary.stainburn@ringways.co.uk>
References: <201705050925.04194.gary.stainburn@ringways.co.uk>
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On Fri, May 05, 2017 at 09:25:04AM +0100, Gary Stainburn wrote:
> This question has been asked a few times, and Google returns a few different
> answers, but I am interested people's opinions and suggestions for the *best*
> wat to retrieve the most recent row from a table.
>
> My case is:
>
> create table people (
> p_id serial primary key,
> ......
> );
>
> create table assessments (
> p_id int4 not null references people(p_id),
> as_timestamp timestamp not null,
> ......
> );
>
> select p.*, (most recent) a.*
> from people p, assessments a
> ..
> ;
You will need to provide a definition for *exactly* what
"most recent" means in this context.
Karsten
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To: pgsql-sql@postgresql.org
Cc: Karsten.Hilbert@gmx.net
Subject: Re: Most recent row
In-Reply-To: <20170505083220.wxdqm3bpwfo2dgre@hermes.hilbert.loc>
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