Date calculations based on working days

Question

I need to add date calculations to a worksheet to show the time elapsed between two actions.
Just a straightforward subtraction works fine, but what I really need to be able to do is calculate the number of working days between the two point (as something taking 5 days over Christmas with the 2 bank holidays is different equivalent to something taking 3 days in a normal week)
At the moment I'm exporting the data into excel for analysis of this, but would really like to be able to do it in Disco so that the end users can go straight to the report using viewer, rather than having to do the conversion for them.
Is this possible?
Cheers

Answer 1

Hi,
Every thing is possible, the Q is how complicated is it....
My suggestion is to create a table with all the dates of the non-working days for ex:
create a table with all the MON-THURSDAYS, union to this table the holidays you know of such as christmas and so on.
After getting this table you can create a function that returns the number of working days between 1 date to another by subtracting the days exists in this table.
I started with that, you are more then welcome to get ahead with it and let us know what happened...
create table holiday
D_date date,
d_day varchar2(20)
create or replace procedure holiday_proc is
d_date date;
begin
d_date := trunc(sysdate);
while d_date<'01-jan-2010'
loop
if to_char(trunc(d_date),'Day') not in ('Saturday ','Sunday ') then
INSERT INTO Holiday (d_date,d_day)
(select trunc(d_date),to_char(trunc(d_date),'Day') from dual);
end if;
d_date := d_date+1;
end loop;
commit;
end holiday_proc;