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Answers and rating deltas for
MySQL: How to find the non exist value in two tables?
| Author | Votes | Δ |
|---|---|---|
| Raphaël Althaus | 1 | +0.67 |
| Xavi López | 1 | +1.21 |
| pribina | 0 | -1.40 |
| John Woo | 0 | -1.70 |
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