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Answers and rating deltas for
Why is this mysql table producing a NULL in the datetime field?
| Author | Votes | Δ |
|---|---|---|
| Raffael Luthiger | 2 | +3.90 |
| Raffael Luthiger | 1 | +1.23 |
| John Fiala | 0 | -2.37 |
| DreadPirateShawn | 0 | -2.76 |
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