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Answers and rating deltas for
How to create a unique index on a NULL column?
| Author | Votes | Δ |
|---|---|---|
| Phil Haselden | 66 | 0.00 |
| onedaywhen | 50 | +4.19 |
| willasaywhat | 22 | -4.19 |
Last visited: Sep 14, 2014, 5:07:29 AM