I'm looking at the new timezone support.
First I initdb'd without TZ set. So every time I start the server I get
LOG: could not recognize system timezone, defaulting to "Etc/GMT-4"
HINT: You can specify the correct timezone in postgresql.conf.
Obviously the setup is wrong because DST doesn't work:
alvherre=# select '2004-03-13 10:00:00'::timetz;
timetz
-------------
10:00:00+04
(1 fila)
alvherre=# select '2004-03-14 10:00:00'::timetz;
timetz
-------------
10:00:00+04
(1 fila)
alvherre=# set TimeZone to 'Chile/Continental';
SET
alvherre=# select '2004-03-13 10:00:00'::timetz;
timetz
-------------
10:00:00-03
(1 fila)
alvherre=# select '2004-03-14 10:00:00'::timetz;
timetz
-------------
10:00:00-04
(1 fila)
Note I get +4 on the default zone and -4 on the correct zone. I think
this is a bug.
So I went and set it in postgresql.conf,
timezone = 'Chile/Continental'
After this, DST works correctly, but I continue to receive the LOG
message above. I think it should be supressed.
I then changed postgresql.conf to read
timezone = unknown
(the difference with the original setting is that the line isn't
commented).
The server now behaves different; the timezone is set to GMT rather than
being guessed from system settings. I think they should work the same.
I also want to be able to specify a non-default timezone and get a time
with the correct displacement. CLT is abbreviation for
Chile/Continental, and CLST is the summer timezone.
alvherre=# select '10:00:00'::time at time zone 'CLT';
timezone
-------------
10:00:00-04
(1 fila)
alvherre=# select '10:00:00'::time at time zone 'CLST';
timezone
-------------
11:00:00-03
(1 fila)
alvherre=# select '10:00:00'::time at time zone 'Chile/Continental';
ERROR: el huso horario "chile/continental" no es reconocido
I would like to get the time in the corresponding zone, without me
having to know in advance whether I'm in current DST or not. Is this
possible? For example I want to know what's the current time in
'Europe/Madrid'.
--
Alvaro Herrera (<alvherre[a]dcc.uchile.cl>)
"Puedes vivir solo una vez, pero si lo haces bien, una vez es suficiente"
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