Re: abstime bug

From: Michael Fuhr <mike(at)fuhr(dot)org>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: jw <jw(at)sduept(dot)com>, pgsql-bugs(at)postgresql(dot)org
Subject: Re: abstime bug
Date: 2005-07-22 14:33:02
Message-ID: 20050722143302.GA19419@winnie.fuhr.org
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On Fri, Jul 22, 2005 at 10:15:40AM -0400, Bruce Momjian wrote:
>
> Current CVS shows:
>
> test=> select '1901/12/14 1:00'::abstime;
> abstime
> ------------------------
> 1901-12-14 01:00:00-05
> (1 row)

Depends on your timezone:

SET TimeZone TO 'US/Eastern';
SELECT '1901/12/14 1:00'::abstime;
abstime
------------------------
1901-12-14 01:00:00-05
(1 row)

SET TimeZone TO 'Asia/Hong_Kong';
SELECT '1901/12/14 1:00'::abstime;
abstime
------------------------
2038-01-19 07:51:40+08
(1 row)

I'd guess this is due to the 32-bitness of abstime. Those timestamps
are around the min and max values of a 32-bit timestamp based on the
traditional Unix epoch.

--
Michael Fuhr
http://www.fuhr.org/~mfuhr/

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