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Posted to issues@arrow.apache.org by "eitsupi (via GitHub)" <gi...@apache.org> on 2023/05/10 16:00:49 UTC
[GitHub] [arrow] eitsupi opened a new issue, #35534: [R] Column order after `group_by(foo) |> select(...)` is different from dplyr
eitsupi opened a new issue, #35534:
URL: https://github.com/apache/arrow/issues/35534
### Describe the bug, including details regarding any error messages, version, and platform.
Related to #35473
I corrected the column order after `mutate` and `transmute` in #35473, but it seems that it needs to be corrected in `select` as well.
The columns used for groups should to be moved to the left.
``` r
mtcars |> dplyr::group_by(cyl) |> dplyr::select(mpg)
#> Adding missing grouping variables: `cyl`
#> # A tibble: 32 × 2
#> # Groups: cyl [3]
#> cyl mpg
#> <dbl> <dbl>
#> 1 6 21
#> 2 6 21
#> 3 4 22.8
#> 4 6 21.4
#> 5 8 18.7
#> 6 6 18.1
#> 7 8 14.3
#> 8 4 24.4
#> 9 4 22.8
#> 10 6 19.2
#> # … with 22 more rows
mtcars |> arrow::arrow_table() |> dplyr::group_by(cyl) |> dplyr::select(mpg) |> dplyr::collect()
#> # A tibble: 32 × 2
#> # Groups: cyl [3]
#> mpg cyl
#> <dbl> <dbl>
#> 1 21 6
#> 2 21 6
#> 3 22.8 4
#> 4 21.4 6
#> 5 18.7 8
#> 6 18.1 6
#> 7 14.3 8
#> 8 24.4 4
#> 9 22.8 4
#> 10 19.2 6
#> # … with 22 more rows
```
<sup>Created on 2023-05-10 with [reprex v2.0.2](https://reprex.tidyverse.org)</sup>
### Component(s)
R
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[GitHub] [arrow] nealrichardson commented on issue #35534: [R] Column order after `group_by(foo) |> select(...)` is different from dplyr
Posted by "nealrichardson (via GitHub)" <gi...@apache.org>.
nealrichardson commented on issue #35534:
URL: https://github.com/apache/arrow/issues/35534#issuecomment-1545704149
Thanks. This would be in `ensure_group_vars()`, and it looks like we might also want to mimic the `Adding missing grouping variables` message to be explicit when this happens.
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[GitHub] [arrow] paleolimbot closed issue #35534: [R] Column order after `group_by(foo) |> select(...)` is different from dplyr
Posted by "paleolimbot (via GitHub)" <gi...@apache.org>.
paleolimbot closed issue #35534: [R] Column order after `group_by(foo) |> select(...)` is different from dplyr
URL: https://github.com/apache/arrow/issues/35534
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