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Answers and rating deltas for

In SQL, how can I perform a "subtraction" operation?

Author Votes Δ
dmcnelis 6 +5.00
Mark Byers 5 +0.68
Mitch Wheat 1 +0.36
gergi 1 +0.87
Chandu 1 +0.70
BoltClock 0 -1.66
Andy White 0 -0.76
Last visited: Sep 14, 2014, 5:07:29 AM