Clodoaldo Pinto <clodoaldo.pinto@gmail.com> writes:
> I'm ordering by date just to show that sunday, the 0th day of the
> week, is the last day of a given week, which is not what I need.
extract(week) follows the ISO definition of week, which is pretty
strange anyway, but in particular it says that weeks start on Monday.
extract(dow) follows a different convention. There's not a lot we
can do about this --- we're certainly not going to change extract(week),
and I can't see changing extract(dow) either.
If you feel that weeks start on Sunday you should ignore extract(week).
regards, tom lane