Re: int4 -> unix timestamp -> sql timestamp; abstime?

From: David Fetter <david(at)fetter(dot)org>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Roman Neuhauser <neuhauser(at)chello(dot)cz>, pgsql-general(at)postgresql(dot)org
Subject: Re: int4 -> unix timestamp -> sql timestamp; abstime?
Date: 2005-01-12 00:40:25
Message-ID: 20050112004024.GA3847@fetter.org
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On Tue, Jan 11, 2005 at 06:35:18PM -0500, Tom Lane wrote:
> Roman Neuhauser <neuhauser(at)chello(dot)cz> writes:
> > what is the opposite of cast(extract('epoch' from now()) as int)?
> > The only thing I found that works is
> > cast(cast(... as abstime) as timestamp)
> > and the documentation says abstime shouldn't be used, and may
> > disappear. What should I use instead?
>
> The recommended locution is
>
> SELECT TIMESTAMP WITH TIME ZONE 'epoch' + <x> * INTERVAL '1 second';

I think this should read:

SELECT TIMESTAMP WITH TIME ZONE 'epoch' AT TIME ZONE 'UTC' + <x> * INTERVAL '1 second';
/* ^^^^^^^^^^^^^^^^^^ */

to conform with the *n*x standard.

Cheers,
D
--
David Fetter david(at)fetter(dot)org http://fetter.org/
phone: +1 510 893 6100 mobile: +1 415 235 3778

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