From: Richard Huxton <dev@archonet.com>
To: Bob Smith <bsmith@h-e.com>
To: pgsql-sql <pgsql-sql@postgresql.org>
Subject: Re: Problem with intervals
Date: Tue, 2 Dec 2003 08:56:05 +0000
Message-ID: <200312020856.05469.dev@archonet.com> (raw)
In-Reply-To: <AFC6FD04-2485-11D8-A180-0003933DD370@h-e.com>
References: <AFC6FD04-2485-11D8-A180-0003933DD370@h-e.com>
On Tuesday 02 December 2003 05:09, Bob Smith wrote:
> I'm getting an unexpected result using intervals in an expression:
>
> select ('2003-10-26 0:00:00'::timestamp + '1 day'::interval)::date;
> date
> ------------
> 2003-10-26
> I assumed '1 day' would always increment the date by 1, but it appears
> that '1 day' just means '24 hours', and due to the daylight/standard
> time shift, October 26 was 25 hours long this year.
>
> Is this a Postgres bug, or is this correct SQL behavior? I'm running
> Postgres 7.2.2.
Expected, because you're acting on a timestamp. When you start looking at time
handling across timezones and daylight saving systems across the world it
does get a bit complicated.
--
Richard Huxton
Archonet Ltd
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To: pgsql-sql@postgresql.org
Cc: dev@archonet.com, bsmith@h-e.com
Subject: Re: Problem with intervals
In-Reply-To: <200312020856.05469.dev@archonet.com>
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