Calculating Weekdays between two dates

Calculating Weekdays between two dates

Create this function:

CREATE OR REPLACE FUNCTION totworkdays (fromdate DATE, todate DATE)
   RETURN NUMBER IS
   totalsundays     NUMBER;
   totalsaturdays   NUMBER;
begin
   totalsundays
        := NEXT_DAY (todate - 7, 'sunday')
           - NEXT_DAY (fromdate - 1, 'sunday');
   totalsaturdays
      :=   NEXT_DAY (todate - 7, 'saturday')
         - NEXT_DAY (fromdate - 1, 'saturday');

   RETURN (todate - fromdate - (totalsundays + totalsaturdays) / 7 - 1);
END totworkdays;

Call this function as follows:


declare
lv_tot_work_days number;
begin
lv_tot_work_days := totworkdays ('01-jan-2009', '31-jan-2009');
dbms_output.put_line('Total Work Days: '||lv_tot_work_days);
end;

Calculating Weekdays between two dates

 Calculating Weekdays between two dates

Calculating total number of Week Days between two given dates is most common requirement. 


This link shows one methods to achieve this.
http://retoscripts.blogspot.com/2009/09/calculating-weekdays-between-two-dates.html