timestamp arithmetic
Note the queries below generate the same result regardless of the timezone input:
% env | grep TZ
PGTZ=CST6CDT
TZ=CST6CDT
% psql -t -c "select version()"
PostgreSQL 8.0.0beta3 on i686-pc-linux-gnu, compiled by GCC 2.96
% psql -t -c "select '1970-01-01 00:00:00+09'::timestamp + '1089352800 seconds'::interval"
2004-07-09 06:00:00
% psql -t -c "select '1970-01-01 00:00:00+03'::timestamp + '1089352800 seconds'::interval"
2004-07-09 06:00:00
% psql -t -c "select '1970-01-01 00:00:00+01'::timestamp + '1089352800 seconds'::interval"
2004-07-09 06:00:00
Ed
"Ed L." <pgsql@bluepolka.net> writes:
Note the queries below generate the same result regardless of the timezone input:
This isn't a bug. Per documentation:
: For timestamp [without time zone], any explicit time zone specified in
: the input is silently ignored. That is, the resulting date/time value is
: derived from the explicit date/time fields in the input value, and is
: not adjusted for time zone.
You want to use timestamp with time zone (timestamptz), I think.
regards, tom lane