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Answers and rating deltas for

When do we need self join exactly?

Author Votes Δ
juergen d 1 +0.01
Barbara Laird 1 +0.41
Muhammad Abdul-Rahim 1 +2.81
Pittsburgh DBA 0 -2.02
Deepak Kumar 0 -2.09
stripathi 0 -2.04
Last visited: Nov 14, 2015, 10:02:11 PM