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Answers and rating deltas for
concatenate two columns in specific format in SQL
| Author | Votes | Δ |
|---|---|---|
| maulik kansara | 2 | +4.38 |
| Dorena | 0 | -1.28 |
| MileP | 0 | -1.21 |
| Jaydip Jadhav | 0 | -0.24 |
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