Talk:Round time

The "alternative approach" is unfortunately broken. For example:

=# set timezone to 'Europe/Paris';
SET
=# select date_round('0001-01-01', '1 hour');
ERROR:  integer out of range
=# \ef date_round -- OK, fine, use bigint instead of integer
CREATE FUNCTION
=# select date_round('0001-01-01', '1 hour');
          date_round          
------------------------------
 0001-01-01 01:09:21+00:09:21
(1 row)

Even today:

=# set timezone to 'Canada/Newfoundland';
SET
=# select now(), date_round(now(), '1 hour');
               now                |        date_round         
----------------------------------+---------------------------
 2014-12-16 20:34:26.493851-03:30 | 2014-12-16 20:30:00-03:30
(1 row)

Unfortunately I don't see an easy way to fix it if while keeping the functionality for doing completely arbitrary intervals, e.g. the "an hour and a half" stated in the example. Anyone else see a reasonable way? Otherwise I'd be inclined to just rip it out, or replace with a version which supports only certain intervals, not arbitrary ones.