Hi, I want to calculate number of event days without overlapping count of days. Example set of data : Event Start End Mall1 1-May 5-May Mall1 3-May 7-May Mall1 11-May 14-May : From this set of data, then for Mall1 count of days is : 1-7may + 11-14may = 7+4 = 11 days Need help how to sum up days for Mall1 without overlapping. Currently what i do is sum up (start-end) group by Event(Mall1) and my result is 14 Thanks before.
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