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Answers and rating deltas for
How can I combine rows and add a column in SQL table?
| Author | Votes | Δ |
|---|---|---|
| Tim Biegeleisen | 2 | +0.67 |
| Nick | 1 | +1.89 |
| Sachin Ailwar | 0 | -2.21 |
| ScaisEdge | 0 | -0.63 |
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