Set analysis - subtraction

[#1]

Hello,

I have an expression that gives me number of not executed processes in a selected time period. I can get the count accurate. However, am not able to get to the actual "process_id" that are not executed.

=count({<start_time=>}process_id) - count(DISTINCT If(Aggr(NODISTINCT Max({$<reviewed_status= >}start_time), process_id) = start_time, process_id))

For example, in my process table I have 5 proceses, and only 4 of them have a row in process_execution table for a given start time, I need to get to the 5th process_id that has now row in the process_execution table.

Thanks in advance for any help,

Shilpa