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Answers and rating deltas for
How to get sums of table column for different groups of data?
| Author | Votes | Δ |
|---|---|---|
| forpas | 5 | +1.84 |
| George Menoutis | 4 | +1.13 |
| Chanukya | 2 | -0.41 |
| forpas | 1 | -2.16 |
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