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Answers and rating deltas for
SQL: How do I combine columns into one, and filter out NULLs?
| Author | Votes | Δ |
|---|---|---|
| Salman A | 2 | +0.56 |
| Gordon Linoff | 2 | +0.71 |
| jwismar | 1 | -0.89 |
| Sandesh Gupta | 1 | -1.48 |
| Vijay Rajendiran | 1 | -1.54 |
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