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  1. Apache Arrow
  2. ARROW-13501

[R] Bindings for count aggregation

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      Not sure about the API on this because from what I understand from bkietz, every aggregation function takes a single field ref, but group_by then count doesn't require a field because you're counting how many rows are in each group. (Perhaps more importantly, dplyr::n() takes no arguments, so we don't have a field ref in our expression to start.)

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              npr Neal Richardson
              npr Neal Richardson
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