Hi Ramana,
One of the way to achieve this is creating a scripted calculation view with input parameters parameters as STARTDATE timestamp, ENDDATE timestamp and ( assuming we have 5 working days in a week) , then use MIGRATE to convert it to GRAPHICAL VIEW.
the output columns will be numofworkingdays type integer.
Logic :-
1. Find number of weeks using (DAYS_BETWEEN(:STARTDATE,:ENDDATE))/7
2. Find start-week and end-week using WEEK function .
3. if number of week is <=2, use WEEKDAY function to get the day of the week from STARTDATE and similarly get day of week from :ENDDATE.
For e.g if startdate is day 4 (Friday) then on 1 working day from week 1 . ENDDATE is day 5 (saturday) of second week , numofworkingdays = 1 + 4 = 5
elseif number of weeks is > 2 its 1+ 4 + 5 = 9.
Keep adding 5 working days depending on number of weeks between start week and end week.
Hope this helps.