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Answers and rating deltas for

How do I do decimal arithmetic on two varchars and return result to an aliased column?

Author Votes Δ
Lorenz Meyer 1 +0.51
Ricardo 0 -1.57
fnightangel 0 -1.46
Katherine Elizabeth Lightsey 0 -1.07
Last visited: May 1, 2015, 9:53:52 PM