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I have 3 columns [A, B, C] in my SQL table. I want to find table entries, where values in A is same,
| Author | Votes | Δ |
|---|---|---|
| Tim Biegeleisen | 4 | +0.80 |
| Michał Turczyn | 1 | +0.35 |
| Stan McGeek | 1 | +0.39 |
| wildplasser | 0 | -1.20 |
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