On Mon, Mar 29, 2004 at 14:30:14 +0200,
Bruno BAGUETTE <pgsql-ml@baguette.net> wrote:
> Hello,
>
> It may be a stupid question, but I'm looking to set a check clause in order
> to be sure that a INTERVAL field is 00:00:00 or higher, but NOT negatives
> values.
>
> How can I set that ?
check (col_name >= '0 day'::interval)