jorisvandenbossche commented on issue #30950:
URL: https://github.com/apache/arrow/issues/30950#issuecomment-1765973854
@wjones127 where is this implemented in the R package? (or which name is it
using, I don't find it based on "duplicate")
BTW, one of the possible workarounds that was being discussed above, using
groupby, nowadays works because the "first"/"last" ordered aggregations have
been added:
```
In [19]: table = pa.table({'a': [1, 2, 1, 3], 'b': ['a', 'b','c', 'd']})
In [20]: table.group_by("a", use_threads=False).aggregate([("b", "last")])
Out[20]:
pyarrow.Table
a: int64
b_last: string
----
a: [[1,2,3]]
b_last: [["c","b","d"]]
```
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