fpixl opened a new issue, #36911:
URL: https://github.com/apache/arrow/issues/36911
### Describe the usage question you have. Please include as many useful
details as possible.
I'm running a few experiments with PyArrow Map type and can't figure out how
to do a map lookup of nested keys using a `pyarrow.compute`. Here's my example:
```python
import pyarrow as pa
import pyarrow.compute as pc
data = pa.array(
[
[
("A", [("x", 1), ("y", 0)]),
("B", [("x", 0), ("y", 0)])
],
[
("A", [("x", 1), ("y", 0), ("z", 1)]),
("C", [("x", 0), ("y", 0), ("z", 1)])
],
],
type=pa.map_(pa.string(), pa.map_(pa.string(), pa.int8())),
)
pc.map_lookup(data, pa.scalar("A"), "all")
```
This is what we get:
```python
<pyarrow.lib.ListArray object at 0x13b692ec0>
[
[
keys: ["x", "y"]
values: [1, 0]
],
[
keys: ["x", "y", "z"]
values: [1, 0, 1]
]
]
```
Then tried `pc.map_lookup(data, pa.scalar("A.x"), "all")` but I get:
```python
<pyarrow.lib.ListArray object at 0x13b693940>
[
null,
null
]
```
How do I get the values of `A.x`?
Thank you!
### Component(s)
Python
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