pub fn _get_rows_encoded(
by: &[Column],
descending: &[bool],
nulls_last: &[bool],
) -> Result<RowsEncoded, PolarsError>
pub fn _get_rows_encoded(
by: &[Column],
descending: &[bool],
nulls_last: &[bool],
) -> Result<RowsEncoded, PolarsError>