alamb opened a new issue, #5454:
URL: https://github.com/apache/arrow-rs/issues/5454
**Describe the bug**
`lexsort_to_indices` a `ListArray` itself works fine
However, `lexsort_to_indices` with a `ListArray` and another array results
in an error:
**To Reproduce**
Here is a reproducer:
```rust
let string_array: ArrayRef = Arc::new(StringArray::from(vec!["a", "b",
"c", "d", "e"]));
let data = vec![
Some(vec![Some(0), Some(1), Some(2)]),
None,
None,
Some(vec![Some(3), None, Some(5)]),
Some(vec![Some(6), Some(7)]),
];
let list_array: ArrayRef =
Arc::new(ListArray::from_iter_primitive::<Int32Type, _, _>(data));
// lex_sort works fine on ListArray
let sort_cols = vec![
SortColumn {
values: list_array.clone(),
options: None,
},
];
arrow::compute::lexsort_to_indices(&sort_cols, None).unwrap();
// but not on list array with string array
let sort_cols = vec![
SortColumn {
values: list_array,
options: None,
},
SortColumn {
values: string_array,
options: None,
},
];
// XXXXX This fails with
// called `Result::unwrap()` on an `Err` value:
InvalidArgumentError("The data type type List(Field { name: \"item\",
data_type: Int32, nullable: true, dict_id: 0, dict_is_ordered: false, metadata:
{} }) has no natural order")
arrow::compute::lexsort_to_indices(&sort_cols, None).unwrap();
```
The test should pass and not error
**Additional context**
Reported by @JasonLi-cn on
https://github.com/apache/arrow-datafusion/pull/9410
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