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Answers and rating deltas for
How can I prevent select() from retrieving an empty dataframe when there are no matches?
| Author | Votes | Δ |
|---|---|---|
| agenis | 3 | +5.20 |
| G. Grothendieck | 2 | -0.48 |
Last visited: Aug 26, 2016, 2:34:25 PM