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Answers and rating deltas for

How can i update a value if it is exsiting in the database, or else i want to insert it

Author Votes Δ
Milen Louis 3 +3.98
Naresh Kumar P 1 +1.56
Pragash 0 -1.60
Blaztix 0 -2.10
premi 0 -1.84
Last visited: Dec 5, 2016, 2:09:05 AM