Francisco Olarte <folarte@peoplecall.com> writes:
> On Fri, 14 Jan 2022 at 11:15, PG Bug reporting form
> <noreply@postgresql.org> wrote:
>> postgres=# set timezone to "PST8PDT";
>> ..
>> postgres=# select (timestamp '2021-03-14 02:00:00')::timestamptz;
>> 2021-03-14 03:00:00-07
>> postgres=# select (timestamp '2021-03-14 03:00:00')::timestamptz;
>> 2021-03-14 03:00:00-07
> You are playing around the DST changes, and timestamp must have unique
> representations, for informal descriptions "time jumps from 2 to 3" is
> fine, when dealing with real data you must decide if it jumps just
> before or just after, it seems your expectations are wrong:
Yeah. See
https://www.postgresql.org/docs/devel/datetime-invalid-input.html
(I'm pointing you to the devel version of that page because it
contains a correction that hasn't yet propagated into the other
versions)
regards, tom lane
