UPDATE hr.hr_leave_record SET hr.hr_leave_record.Day_count = hr.leave_type_master_list.day_count * hr.hr_leave_record.leave_day WHERE hr.leave_type_master_list.leave_type_id = hr.hr_leave_record.leave_type_id it gives me this error ORA-00904: "HR"."LEAVE_TYPE_MASTER_LIST"."LEAVE_TYPE_ID": invalid identifier need help on this