max (timestamptz, timestamptz) does not exist already. You need to
create a simple function in PLpgSQL something like
if a > breturn a;
elsereturn b;
Even an sql function will do the job here using case statement.
--Imad
www.EntepriseDB.com
On 11/13/06, A. Kretschmer <andreas.kretschmer@schollglas.com> wrote:
> am Mon, dem 13.11.2006, um 13:46:00 +0000 mailte T E Schmitz folgendes:
> > I tried the following query but the query fails as
> > "function max (timestamp w. timezone,timestamp w. timezone) does not exist"
> >
> > SELECT id,
> >
> > MAX(last_updated,
> > (SELECT MAX (last_updated) FROM product_category_member WHERE
> > product_category_member.id = product_category.id))
> >
> > FROM product_category
> >
> >
> > product_category.last_updated and product_category_member.last_updated
> > are timestamps with timezone.
>
> Really, there are no such function. Perhaps this can help you:
>
> SELECT id, MAX(product_category.last_updated),
> MAX(product_category_member.last_updated) from product_category,
> product_category_member WHERE product_category_member.id =
> product_category.id;
>
> **untested**
>
>
>
> Your fault is that there are no max(timestamp,timestamp) - funktion and
> i think, you should read more about JOINs.
>
>
> Andreas
> --
> Andreas Kretschmer
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