Re: How can I get the first and last date of a week, based on the week number and the year - Mailing list pgsql-general

On Tuesday 26 February 2008 8:39 pm, Tom Lane wrote:
> Adrian Klaver <aklaver@comcast.net> 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

I am not sure I follow. The OP has a ISO week number and a year and wants
dates. I thought date_trunc('field',source) requires a timestamp or interval
as its source.
--
Adrian Klaver
aklaver@comcast.net