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Answers and rating deltas for
How to write a select statement in SQL that returns the following result from the set provided
| Author | Votes | Δ |
|---|---|---|
| John Cappelletti | 3 | +0.36 |
| Viki888 | 3 | +0.89 |
| Stephan Lechner | 1 | -0.83 |
| MtwStark | 1 | -1.80 |
| paulbarbin | 1 | -1.62 |
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