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Answers and rating deltas for

How can this MYSQL query be better

Author Votes Δ
AJ. 4 +2.22
Johan 2 +0.97
a1ex07 1 +0.20
Frank Schmitt 0 -1.36
Joe Stefanelli 0 -2.03
Last visited: Sep 14, 2014, 5:07:29 AM