assignUser commented on issue #39660:
URL: https://github.com/apache/arrow/issues/39660#issuecomment-1899317061
Thanks @paleolimbot, that does work:
```r
r$> mtcars4 = open_dataset(tmp, partitioning = hive_partition(test =
string()))
r$> mtcars4
FileSystemDataset with 6 Parquet files
mpg: double
cyl: double
disp: double
hp: double
drat: double
wt: double
qsec: double
vs: double
am: double
gear: double
carb: double
test: string
r$> mtcars4 |> as_tibble()
# A tibble: 32 × 12
mpg cyl disp hp drat wt qsec vs am gear carb test
<dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <chr>
1 22.8 4 108 93 3.85 2.32 18.6 1 1 4 1 01
2 21.4 6 258 110 3.08 3.22 19.4 1 0 3 1 01
3 18.1 6 225 105 2.76 3.46 20.2 1 0 3 1 01
4 32.4 4 78.7 66 4.08 2.2 19.5 1 1 4 1 01
5 33.9 4 71.1 65 4.22 1.84 19.9 1 1 4 1 01
6 21.5 4 120. 97 3.7 2.46 20.0 1 0 3 1 01
7 27.3 4 79 66 4.08 1.94 18.9 1 1 4 1 01
8 18.7 8 360 175 3.15 3.44 17.0 0 0 3 2 02
9 24.4 4 147. 62 3.69 3.19 20 1 0 4 2 02
10 22.8 4 141. 95 3.92 3.15 22.9 1 0 4 2 02
```
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