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Answers and rating deltas for
SQL can I have a "conditionally unique" constraint on a table?
| Author | Votes | Δ |
|---|---|---|
| Arthur | 15 | +1.70 |
| Tom H. | 2 | +0.97 |
| KM. | 0 | -1.08 |
| Adam Musch | 0 | -1.95 |
| HLGEM | 0 | -0.40 |
| Andomar | 0 | -0.94 |
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