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Answers and rating deltas for

How to aggregate (counting distinct items) over a sliding window in SQL Server?

Author Votes Δ
Paul Maxwell 7 +1.47
Salman A 4 +0.96
Shnugo 2 +0.15
uzi 2 +1.71
Juan Carlos Oropeza 1 -0.77
Steve Chambers 1 -0.70
Yosi Dahari 1 -0.51
Mark Maurice Williams 0 -3.18
Başar Kaya 0 -3.07
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