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Answers and rating deltas for
postgresql: Need a sql query to find how many posts are there with one category
| Author | Votes | Δ |
|---|---|---|
| Joe Stefanelli | 4 | +0.78 |
| Erwin Brandstetter | 3 | -0.18 |
| Sean | 3 | +1.61 |
| Jhonathan | 1 | -3.09 |
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