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Answers and rating deltas for
how can i select two columns from two tables
| Author | Votes | Δ |
|---|---|---|
| luxer | 0 | +0.09 |
| Swiss | 0 | -0.01 |
| Yohanes Khosiawan 许先汉 | 0 | +0.01 |
Last visited: Sep 14, 2014, 5:07:29 AM