dangotbanned opened a new issue, #48344:
URL: https://github.com/apache/arrow/issues/48344
### Describe the bug, including details regarding any error messages,
version, and platform.
This is the inverse of #46355, so I'll continue from there 😅:
### Repro
```py
import pyarrow as pa
table = pa.table({"a": pa.array([]), "b": pa.array([], type=pa.float64())})
array = table.to_struct_array()
print(array)
print(array.type.fields)
pa.Table.from_struct_array(array)
```
### Output
```py
<pyarrow.lib.ChunkedArray object at 0x...>
[
]
[pyarrow.Field<a: null>, pyarrow.Field<b: double>]
./pyarrow/table.pxi:4945, in pyarrow.lib.Table.from_struct_array()
./pyarrow/table.pxi:5032, in pyarrow.lib.Table.from_batches()
ValueError: Must pass schema, or at least one RecordBatch
```
### Workaround
I'm doing quite a lot of version branching here already:
-
https://github.com/narwhals-dev/narwhals/blob/e4f0f83a15808349f2f4970e5549b791671fe601/narwhals/_plan/arrow/series.py#L321-L330
-
https://github.com/narwhals-dev/narwhals/blob/e4f0f83a15808349f2f4970e5549b791671fe601/narwhals/_plan/arrow/functions.py#L337-L334
In short, it looks like:
```py
import pyarrow as pa
table = pa.table({"a": pa.array([]), "b": pa.array([], type=pa.float64())})
array = table.to_struct_array()
from_struct_array = pa.schema(array.type.fields).empty_table()
print(from_struct_array)
```
```py
pyarrow.Table
a: null
b: double
----
a: [0 nulls]
b: [[]]
```
### Component(s)
Python
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