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Answers and rating deltas for
How to take sum of column with same id in SQL?
| Author | Votes | Δ |
|---|---|---|
| Johanna Larsson | 4 | +4.54 |
| Jonathan Leffler | 3 | +0.15 |
| Grisha Weintraub | 2 | -1.17 |
| Kumar_2002 | 1 | -3.50 |
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