Struct Sort 

pub struct Sort { /* private fields */ }

A transform that sorts rows by one or more columns.

Example

use alimentar::{Sort, SortOrder};

// Sort by single column ascending
let sort = Sort::by("age");

// Sort by column descending
let sort = Sort::by("score").order(SortOrder::Descending);

// Sort by multiple columns
let sort = Sort::by_columns(vec![("name", SortOrder::Ascending), ("age", SortOrder::Descending)]);

Implementations

impl Sort

pub fn by<S: Into<String>>(column: S) -> Self

Creates a Sort transform for a single column (ascending by default).

pub fn by_columns<S: Into<String>>( columns: impl IntoIterator<Item = (S, SortOrder)>, ) -> Self

Creates a Sort transform for multiple columns with specified orders.

pub fn order(self, order: SortOrder) -> Self

Sets the sort order for a single-column sort.

pub fn nulls_first(self, nulls_first: bool) -> Self

Sets whether nulls should appear first (default: false, nulls last).

pub fn columns(&self) -> &[(String, SortOrder)]

Returns the columns and their sort orders.

Trait Implementations

impl Clone for Sort

fn clone(&self) -> Sort

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Sort

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Transform for Sort

fn apply(&self, batch: RecordBatch) -> Result<RecordBatch>

Applies the transform to a RecordBatch.