AlenkaF commented on PR #14493:
URL: https://github.com/apache/arrow/pull/14493#issuecomment-1293348987
Yeah, that's unfortunate. `select()` with "dotted path" doesn't work for
`pyarrow.Table` but works for `ORCF.read()`:
```python
> result4 = orc_file.read(columns=["struct.middle.inner"])
opt/conda/envs/arrow/lib/python3.8/site-packages/pyarrow/tests/test_orc.py:584:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _
opt/conda/envs/arrow/lib/python3.8/site-packages/pyarrow/orc.py:189: in read
table = table.select(columns)
pyarrow/table.pxi:3053: in pyarrow.lib.Table.select
???
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
_ _
> ???
E KeyError: 'Field "struct.middle.inner" does not exist in table schema'
```
Due to that the easy solution for reordering the columns isn't feasible
anymore. Will close this PR and make another one, where I will add information
to the docstrings that in `orc.read_table()` we always follow the order of the
file.
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