Calculate total empoyee days (as of present) that have elapsed for each month in a FY

Hello, everyone,

I'm running CF server connecting to an Oracle (11g)  db.

I have a table that keeps track of projects (past, present, future) and need a way to sum the days for each project, for each month, that have happened.

For example.

ID   -	Name	-   Start	-   Stop	- Employees
001	Project A	01-Oct-14	31-Dec-14	8
002	Project B	06-Feb-15	21-Feb-15	9
003	Project C	30-Oct-14	29-Nov-14	3
004	Project D	26-Dec-14	16-Apr-15	21

I'm trying to create an overview where the display will have the months of a Fiscal Year go across the page, indicating the number of employee days for each project that have elapsed. (NOT counting the current day).  New requirement:To make matters even more complex, there is a related table for the employees showing what dates they actually started and stopped (not every employee starts on day 1 and ends on the last day.. some start a day or two after the project start, etc.)

I'm not wrapping my head around this, for some reason. Mental block. Any ideas?

Someone in another forum suggested a PIVOT.  That's above my paygrade (I have never used PIVOT, don't understand how it works, etc.)

V/r,

^_^