Calculate number of working days in a month

Question

Hi All,
I am trying to build a report to calculate the performance of a sales rep for the current month. This report has to exclude the holidays (saturday, sunday and one extra day in each month) in order get the exact performance. Could anyone suggest me on how to go about writing a Case statement which would get me the number of working days in a month excluding holidays.
Thanks

Answer 1

Hi,
There are no direct oracle function that could be used to get the desired results.
However you could try using something like
SELECT COUNT( *)
FROM
(SELECT ROWNUM RNUM
FROM ALL_OBJECTS
WHERE ROWNUM <= TO_DATE('&1') - TO_DATE('&2') + 1
WHERE TO_CHAR(TO_DATE('&2') + RNUM - 1, 'DY') NOT IN('SAT', 'SUN');
Give the two date ranges that you want to look for with the highiest one first. i.e say for example - 01-FEB-2011 to 31-DEC-2010 would give the working days in JAN. However note that you might have to check for holidays related to that country/region (which could be added as a seperate table).
If you need to get an extra day in addition to the weekends, please give the dates accordingly
SQL> SELECT COUNT( *)
2 FROM
3 (SELECT ROWNUM RNUM
4 FROM ALL_OBJECTS
5 WHERE ROWNUM <= TO_DATE('01-FEB-2011') - TO_DATE('01-JAN-2011') + 1
6 )
7 WHERE TO_CHAR(TO_DATE('01-JAN-2011') + RNUM - 1, 'DY') NOT IN('SAT', 'SUN');
COUNT(*)
22