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Add missing array functions #1468

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3fd8b16
Add missing array/list functions and aliases (#1452)
timsaucer Mar 30, 2026
5b592dc
Add unit tests for new array/list functions and aliases
timsaucer Mar 30, 2026
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30 changes: 30 additions & 0 deletions crates/core/src/functions.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -93,6 +93,22 @@ fn array_cat(exprs: Vec<PyExpr>) -> PyExpr {
array_concat(exprs)
}

#[pyfunction]
fn array_distance(array1: PyExpr, array2: PyExpr) -> PyExpr {
let args = vec![array1.into(), array2.into()];
Expr::ScalarFunction(datafusion::logical_expr::expr::ScalarFunction::new_udf(
datafusion::functions_nested::distance::array_distance_udf(),
args,
))
.into()
}

#[pyfunction]
fn arrays_zip(exprs: Vec<PyExpr>) -> PyExpr {
let exprs = exprs.into_iter().map(|x| x.into()).collect();
datafusion::functions_nested::expr_fn::arrays_zip(exprs).into()
}

#[pyfunction]
#[pyo3(signature = (array, element, index=None))]
fn array_position(array: PyExpr, element: PyExpr, index: Option<i64>) -> PyExpr {
Expand Down Expand Up @@ -661,6 +677,12 @@ array_fn!(array_intersect, first_array second_array);
array_fn!(array_union, array1 array2);
array_fn!(array_except, first_array second_array);
array_fn!(array_resize, array size value);
array_fn!(array_any_value, array);
array_fn!(array_max, array);
array_fn!(array_min, array);
array_fn!(array_reverse, array);
array_fn!(string_to_array, string delimiter null_string);
array_fn!(gen_series, start stop step);
array_fn!(cardinality, array);
array_fn!(flatten, array);
array_fn!(range, start stop step);
Expand Down Expand Up @@ -1121,6 +1143,14 @@ pub(crate) fn init_module(m: &Bound<'_, PyModule>) -> PyResult<()> {
m.add_wrapped(wrap_pyfunction!(array_replace_all))?;
m.add_wrapped(wrap_pyfunction!(array_sort))?;
m.add_wrapped(wrap_pyfunction!(array_slice))?;
m.add_wrapped(wrap_pyfunction!(array_any_value))?;
m.add_wrapped(wrap_pyfunction!(array_distance))?;
m.add_wrapped(wrap_pyfunction!(array_max))?;
m.add_wrapped(wrap_pyfunction!(array_min))?;
m.add_wrapped(wrap_pyfunction!(array_reverse))?;
m.add_wrapped(wrap_pyfunction!(arrays_zip))?;
m.add_wrapped(wrap_pyfunction!(string_to_array))?;
m.add_wrapped(wrap_pyfunction!(gen_series))?;
m.add_wrapped(wrap_pyfunction!(flatten))?;
m.add_wrapped(wrap_pyfunction!(cardinality))?;

Expand Down
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