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Answers and rating deltas for
what will be the sql query for checking same pairs of column values in a table?
| Author | Votes | Δ |
|---|---|---|
| Paddy | 2 | +0.53 |
| gotjee | 0 | -1.43 |
| anuj.dikshit | 0 | -1.36 |
| Sven Tore | 0 | -1.47 |
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