I'm trying to match two date ranges and then count the number of days that overlap from one to another. Both intervals reside in a same table. For example, I'm trying to calculate number of DaysDiscounted:
FromActualDate ToActualDate FromDiscountDate ToDiscountDate DaysDiscounted
3/24/2013 4/6/2013 4/1/2013 4/10/2013 6
4/7/2013 4/20/2013 4/1/2013 4/10/2013 4
3/24/2013 4/6/2013 4/1/2013 4/5/2013 5
I could implenet manual logic something like a calculated field like:
=if(ToDiscountDate > ToActualDate, (ToDiscountDate - ToActualDate)+1,(ToActualDate - FromDiscountDate)+1)
but it does not work in all Cases, wondering if QlikView provides more effiecient way, similar to IntervalMatch.
Any suggestions?
