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Answers and rating deltas for
How can I merge two dataframes if two cols have to be the same?
| Author | Votes | Δ |
|---|---|---|
| David_B | 1 | +2.14 |
| Zheyuan Li | 1 | +1.70 |
| MKG | 0 | -3.84 |
Last visited: Aug 27, 2016, 5:05:57 PM