icexelloss opened a new issue, #45732:
URL: https://github.com/apache/arrow/issues/45732
### Describe the enhancement requested
Hi,
I am testing out the recently added "pivot_wider" kernel and noticed that it
doesn't support integer key types, i.e.,
If I tried to do
```
pc.call_function("pivot_wider", [[3, 6558, 123], [10, None, 11]])
```
It will error out, however, I think it can be useful to support this in
addition to
```
pc.call_function("pivot_wider", [["3", "6558", "123"], [10, None, 11]])
```
The reason is that sometimes the keys can be integer (i.e., id) and the user
could want to have one column per id. The current workaround is to "cast" the
key columns to string but I think it is more efficient to support integer key
types natively (basically id n in key columns can map to output column "n").
@pitrou Does that make sense?
### Component(s)
C++
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