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Answers and rating deltas for
I want SQL query to relate two tables data ,where both tables have only one column each
| Author | Votes | Δ |
|---|---|---|
| AllisonC | 2 | +2.65 |
| Optillect Team | 2 | +2.86 |
| MatBailie | 0 | -0.39 |
| b_dubb | 0 | -2.41 |
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