The Time Evaluation Operation that I find the closest to Payroll Calculation Operation CMPER is the following sequence :
HRS=Czzzzz HRS?0 or HRS=Czzzzz HRS?1
To work, this requires a Constant (zzzzz) in table view V_T511K set-up to have a value of 0 (zero) from the beginning of time until the day before and a value of 1 from the day of delimitation until the end of time.
Example of our first 2 constants for 2012
To operation HRS?x, the return values we use are = or *
but you could also use > or <