Re: BUG #5552: incorrect returned value of time

На 12.07.2010 г. 10:16, Konstantin Kulikov написа:
>
> The following bug has been logged online:
>
> Bug reference: 5552
> Logged by: Konstantin Kulikov
> Email address: k(dot)e(dot)kulikov(at)gmail(dot)com
> PostgreSQL version: 8.3
> Operating system: unix
> Description: incorrect returned value of time
> Details:
>
> select current_timestamp at time zone 'GMT+3';
>
> will return actually 'GMT-3'

Excerpts from the docs ("8.5.3. Time Zones",
http://www.postgresql.org/docs/8.3/static/datatype-datetime.html#DATATYPE-TIMEZONES):

" - In addition to the timezone names and abbreviations, PostgreSQL will
accept POSIX-style time zone specifications of the form STDoffset or
STDoffsetDST, where STD is a zone abbreviation, offset is a numeric
offset in hours west from UTC, and DST is an optional daylight-savings
zone abbreviation, assumed to stand for one hour ahead of the given
offset..."

and:

"Another issue to keep in mind is that in POSIX time zone names,
positive offsets are used for locations west of Greenwich. Everywhere
else, PostgreSQL follows the ISO-8601 convention that positive timezone
offsets are east of Greenwich. ..."

--
Milen A. Radev