This works! This method works like a charm for metrics which are
additive in nature eg. Orders, no. of page views. Although for Unique
Visitors(UV) it gives different values than what I wanted. Eg. Data at a
Daily Level Aug 1 has 10 UVs Aug 2 has 10 UVs Now for Aug 1 to Aug 2 :UV
count will be less than 20 as some visitors are getting repeated and not
10+10 = 20. Currently the above method gives 20, Is there any work
around for metrics which are not additive?