Re: Need beginning and ending date value for a particular week in the year

> So for the calculated week value (i.e. 2009w22) I need to be able to
> calculate the first and last day of the week (05/25/2009 and
> 05/31/2009).  Is there a clean / fairly easy way to do this?  I can
> think of doing some string comparisons and walking through date values
> to figure it out but was wondering if there was a rather simplistic
> way to do this that I am overlooking.


well, a few things that come to mind.....    figure out how many days
are in the first partial week prior to week 1 of this year, that would
be something like 7 - day_of_week(YYYY-01-01), then take  '1
day'::interval * (week-1)*7 + that offset, and add that to YYYY-01-01
... add '6 day'::interval to get the last day of the week...