> First of all, you need to use ordering to ensure that the database gives
> you the most convenient order for processing, as this will make your
> computations much easier. So I'd suggest sorting by clientNumber,
> ServiceNumber, Begindate and Enddate. That way you can consider each
> service sepa
[EMAIL PROTECTED] wrote:
> I am currently working on a tricky problem at work. I googled around a
> bit, but "time intervals" did not come up with anything useful.
> Although I have some rough idea of how I could solve it, I still would
> value some input.
>
> I have information of (It has only co
