From: | Robert Haas <robertmhaas(at)gmail(dot)com> |
---|---|
To: | Hans-Henrik Fuxelius <hfuxelius(at)gmail(dot)com> |
Cc: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, pgsql-bugs(at)postgresql(dot)org |
Subject: | Re: BUG #6340: to_timestamp() miscalculates |
Date: | 2011-12-23 17:25:31 |
Message-ID: | CA+TgmoafHC-qikDq0LFxXKbtNEPGeA0Rq=9P=u8KjtmpWjNE5w@mail.gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-bugs |
On Fri, Dec 16, 2011 at 3:43 AM, Hans-Henrik Fuxelius
<hfuxelius(at)gmail(dot)com> wrote:
> It seems not possible to suppress to_timestamp from doing daylight
> saving conversion, I have GPS timeseries that looks perfect in the
> 'timestamp without time zone' save one value that wreck the whole time
> serie, does that mean that time series cant be stored in time stamps?
I think it mostly means that you shouldn't use timestamp without time zone.
Or else you should use a time zone setting that doesn't involve DST.
Throwing away the time zone information is bad, because YYYY-MM-DD
HH:MM:SS doesn't uniquely identify a point in time, even if you know
what time zone it's relative to. That combination of years, minutes,
days, hours, minutes, and seconds can occur twice, if it's near a DST
boundary.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company
From | Date | Subject | |
---|---|---|---|
Next Message | Tom Lane | 2011-12-23 17:46:55 | Re: BUG #6341: Packaging - virtual provides "postgres" without version |
Previous Message | Robert Haas | 2011-12-23 17:21:31 | Re: user names & non-ASCII |