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Answers and rating deltas for

how can i write a query for update data in sql?

Author Votes Δ
Rajesh 2 +4.35
Santosh Sharma 1 +0.27
Arvind 1 +0.32
Vidhyanand 1 +0.43
Rob 0 -0.67
Last visited: May 1, 2015, 9:36:33 PM