Work Days without Holidays

[Scott]

I am trying to calculate and expected completion date
based off a start date and the number of days to
completion. I only want to count work days (no weekends
and no holidays). I'm using the DateAdd function but
cannot find a good way to remove the holidays. Any
suggestions??

Thanks

[Mike S.]

You have to create a table with holidays dates (which would include
office-closed dates too like the boss's dog birthday)

Then you can subtract the count of dates in the table that fall between
sdate and edate:
select count(*) from offdates where offdate between sdate and edate

If you don't include sat and sun dates in the table, then you have to loop
from sdate to edate, use dateadd 1 day and get the day name and check...

The sophisticated way of doing this, and for any scheduling app, would be to
use a Time Dimension table (used in data warehousing) which would include
dates for at least 3 years with many other fields - with this you can get
what you want in a single SQL statement. If you are interested in this,
check out Ralph Kimball books.

--
Mike S.
Optimal Systems www.oscorp.com
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[Van T. Dinh]

See Arvin Meyer's Web site:

http://www.datastrat.com/Code/GetBusinessDay.txt

--
HTH
Van T. Dinh
MVP (Access)

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