On 8/3/2012 11:23 AM, Laszlo Nagy wrote:
I suspect that you have not correctly internalized what timestamptz
values actually are. Internally they are just time values specified in
UTC (or UT1 if you want to be picky). On input, the value is rotated
from whatever zone is specified in the string (or implicitly specified
by "timezone") to UTC. On output, the value is rotated from UTC to
whatever the current "timezone" setting is.
Oh I see. So actually they don't store the zone? I have seen that timestamptz
and timestamp both occupy 8 bytes, but I didn't understand completely.
It also means that if I want to store the actual time zone (in what the value
was originally recorded), then I have to store the zone in a separate field.
Later I can convert back to the original time zone, but only with an external
program.
Fine with me. I'm happy with this, just I did not understand how it works.
You could store the zone in a separate field and then create a VIEW on the
table that used a function to take both values and return the timestamptz just
as it was inserted.
--
Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-admin
