Struct SortIterator 

pub struct SortIterator<I: RowIterator> { /* private fields */ }

Iterator that sorts rows according to ORDER BY expressions.

Note: Sorting requires materializing all input rows into memory. This iterator collects all rows from its input, sorts them, and then yields them one at a time.

Implementations

impl<I: RowIterator> SortIterator<I>

pub fn new(input: I, order_by: &[SortExpr]) -> Result<Self>

Creates a new sort iterator.

This constructor immediately materializes all input rows and sorts them.

Errors

Returns an error if reading from input fails or if sort key evaluation fails.

pub fn new_with_policy( input: I, order_by: &[SortExpr], policy: Option<MemoryPolicy>, ) -> Result<Self>

Creates a new sort iterator with an optional memory policy.

Trait Implementations

impl<I: RowIterator> RowIterator for SortIterator<I>

fn next_row(&mut self) -> Option<Result<Row>>

Advances the iterator and returns the next row, or None if exhausted.

fn schema(&self) -> &[ColumnMetadata]

Returns the schema of rows produced by this iterator.