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Answers and rating deltas for
In SQL how do I group by every one of a long list of columns and get counts, assembled all into one
| Author | Votes | Δ |
|---|---|---|
| Ranga Vure | 1 | +0.08 |
| Marl | 1 | +0.29 |
| Steven | 1 | -0.05 |
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