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Answers and rating deltas for
How do I count how many of these columns have a value in SQL?
| Author | Votes | Δ |
|---|---|---|
| KM. | 2 | +0.76 |
| Phil Sandler | 2 | +3.45 |
| Michael Goldshteyn | 0 | -1.33 |
| ulty4life | 0 | -1.22 |
| Martin Smith | 0 | -0.87 |
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