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An Elo-based rating system for Stack Overflow
Answers and rating deltas for
SQL how to find non null column?
| Author | Votes | Δ |
|---|---|---|
| Robin Day | 7 | +1.51 |
| Rob Farley | 3 | +2.44 |
| paxdiablo | 2 | -0.12 |
| edosoft | 1 | -0.50 |
| HLGEM | 0 | -1.16 |
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