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Answers and rating deltas for
Count number of NULL values in each column in SQL
| Author | Votes | Δ |
|---|---|---|
| Alireza | 3 | +3.67 |
| Paolo | 0 | -1.82 |
| Richard Hansell | 0 | -1.67 |
| mohan111 | 0 | -0.02 |
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