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Answers and rating deltas for

where is my mistake in my SQL code?

Author Votes Δ
Alex 3 +1.12
Sergey Kalinichenko 0 -0.98
Simon 0 -0.63
Rohit Gupta 0 +0.00
mugiwaradz 0 -0.51
Last visited: Jan 2, 2016, 9:47:38 PM