Jorge Godoy pisze:
> Are you sure?
>
> http://en.wikipedia.org/wiki/ISO_8601
snip
>
> As Jan 1st, 2010 happened on a Friday, it was on week 53 of 2009.
you are right, thanks for pointing that out.
I didn't check the opposite way like this:
select date_part('week', '2010-01-01'::date);date_part
----------- 53
I need to recheck my code.