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Answers and rating deltas for
How can I create a SQL unique constraint based on 2 columns?
| Author | Votes | Δ |
|---|---|---|
| Jonathan | 36 | +4.43 |
| AdaTheDev | 14 | +1.08 |
| Tamseyc | 3 | 0.00 |
| John Sansom | 3 | +0.28 |
| John Saunders | 1 | -0.96 |
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