What happens when you subtract the time to read all of your rows?
deleteRows is designed so you don't have to read any data-- you can compute
a range to delete. For instance, in time series table, it's trivial to give
a start and end date as your rows and call deleteRows.

On Mon, Nov 16, 2015 at 10:35 AM, z11373 <[EMAIL PROTECTED]> wrote: