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Answers and rating deltas for
equivalent of pandas groupby('v1').apply(lambda x:['v2'].nunique()) in postgres sql
| Author | Votes | Δ |
|---|---|---|
| Laurenz Albe | 3 | +0.42 |
| Jim Jones | 0 | -3.36 |
Last visited: May 20, 2018, 5:04:22 PM