Function arrow_ord::sort::lexsort

pub fn lexsort(
    columns: &[SortColumn],
    limit: Option<usize>
) -> Result<Vec<ArrayRef>, ArrowError>

Sort a list of ArrayRef using SortOptions provided for each array.

Performs a stable lexicographical sort on values and indices.

Returns an ArrowError::ComputeError(String) if any of the array type is either unsupported by lexsort_to_indices or take.

Example:

let sorted_columns = lexsort(&vec![
    SortColumn {
        values: Arc::new(PrimitiveArray::<Int64Type>::from(vec![
            None,
            Some(-2),
            Some(89),
            Some(-64),
            Some(101),
        ])) as ArrayRef,
        options: None,
    },
    SortColumn {
        values: Arc::new(StringArray::from(vec![
            Some("hello"),
            Some("world"),
            Some(","),
            Some("foobar"),
            Some("!"),
        ])) as ArrayRef,
        options: Some(SortOptions {
            descending: true,
            nulls_first: false,
        }),
    },
], None).unwrap();

assert_eq!(sorted_columns[0].as_primitive::<Int64Type>().value(1), -64);
assert!(sorted_columns[0].is_null(0));

Note: for multi-column sorts without a limit, using the row format may be significantly faster