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Answers and rating deltas for

How to get the YearNum as columns and total, group by MonthNum from below table

Author Votes Δ
Ullas 0 -0.00
Serg 0 +0.30
Bishoy Frank 0 -0.12
Raul 0 -0.14
user6256515 0 +0.00
Last visited: Aug 26, 2016, 2:34:25 PM