Cefull Lo <cefull(at)gmail(dot)com> writes:
> I'm located in Hong Kong, UTC+8 time zone. When I
> select current_timestamp;
> 2012-01-13 23:56:16.825558+08
> However, when I
> select current_timestamp at time zone 'UTC+8';
> I expect the result is the same as the above one.
Sorry, but it isn't. A time zone name spelled that way is a POSIX time
zone specification, and in POSIX positive offsets are west of Greenwich,
not east. See
http://www.postgresql.org/docs/9.1/static/datatype-datetime.html#DATATYPE-TIMEZONES
regards, tom lane