| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | root <root(at)esc(dot)rosemere(dot)qc(dot)ca> |
| Cc: | pgsql-bugs(at)postgresql(dot)org |
| Subject: | Re: Postgresql 7.0 bug |
| Date: | 2000-05-29 03:49:23 |
| Message-ID: | 4060.959572163@sss.pgh.pa.us |
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| Lists: | pgsql-bugs |
root <root(at)esc(dot)rosemere(dot)qc(dot)ca> writes:
> SELECT '2000-04-03'::timestamp - '2000-04-02'::timestamp;
> ?column?
> ----------
> 23:00
> (1 row)
> Why april 2nd, 2000 don't last 1 day (or 24 hours) ?
Here in the USA, that is the right answer because 4/2 was a daylight
savings switchover date. Notice the difference in timezones:
regression=# select '2000-04-03'::timestamp;
?column?
------------------------
2000-04-03 00:00:00-04
(1 row)
regression=# select '2000-04-02'::timestamp;
?column?
------------------------
2000-04-02 00:00:00-05
(1 row)
If it wasn't a DST change date where you live, then you are running
with the wrong timezone setting...
regards, tom lane
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