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Answers and rating deltas for
How to calculate how many null values are present in each column?
| Author | Votes | Δ |
|---|---|---|
| a_horse_with_no_name | 2 | +1.54 |
| Boneist | 0 | -0.63 |
| Salman A | 0 | -0.92 |
Last visited: Sep 4, 2019, 3:46:46 PM