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Answers and rating deltas for
How can I write a SQL query that displays grandparents without children (two sub-tables)?
| Author | Votes | Δ |
|---|---|---|
| Gordon Linoff | 3 | +0.81 |
| user7941334 | 0 | -1.96 |
| RoMEoMusTDiE | 0 | -0.56 |
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