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Answers and rating deltas for
Rails migration - add unique index allowing skipping null values
| Author | Votes | Δ |
|---|---|---|
| sam | 1 | +2.71 |
| eudaimonia | 1 | +2.91 |
| Salil | 0 | -0.23 |
| lg86 | 0 | -2.10 |
| Gabbar | 0 | -0.21 |
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