Adrian Klaver <aklaver@xxxxxxxxxxx> writes: > On Tuesday 26 February 2008 5:32 pm, Bruno Baguette wrote: >> I have a week number (ISO 8601) and a year, based on theses values, I >> would like to get the first and the last dates of that week. > This will get you to the Monday of the week . > select to_date('9 08','IW YY'); > to_date > ------------ > 2008-02-25 > (1 row) date_trunc('week', ...) would probably be a more convenient way of doing that. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 9: In versions below 8.0, the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match