Hi, Try this to_char(DATE,'YYYY') || ' - ' || to_char(DATE,'WW') as WEEK, to_char(DATE,'WW') as WEEKNO, to_char(trunc(DATE,'WW'),'DD-MM-YYYY') as WEEKSTRT, to_char(trunc(DATE,'WW')+6,'DD-MM-YYYY') as WEEKEND use somthing like in your detail report query.