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Answers and rating deltas for
SQL:find table1.col1 not exist table2.col2, return table1's records
| Author | Votes | Δ |
|---|---|---|
| Alex Kudryashev | 1 | +4.35 |
| B. P. Singh | 0 | -1.22 |
| Zohar Peled | 0 | -0.26 |
| Md Mahfuzur Rahman | 0 | -1.02 |
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