Here is the issue that I am facing..

The report is designed with two date parameters to capture what we call "patients served". That is less technically anyone's ass that touched a bed during the input date range. The record selection criteria is as below:

{EPISODE_HISTORY.PREADMIT_ADMISSION_DATE} <= {?End} and
(isnull({EPISODE_HISTORY.DATE_OF_DISCHARGE}) or
{EPISODE_HISTORY.DATE_OF_DISCHARGE} >= {?Start})

This does works for capturing anyone during the date range, but it ends up having to be run for each month of a year to get a monthly count. Can anyone help with a way to create a range of the dates that could then be grouped by month. So I could run it for a year and then get a monthly count of "patients served" There may be the need for records to be counted in multiple months.

I hope that explanation makes some sense.