Struct MergeJoinNode 

pub struct MergeJoinNode { /* private fields */ }

Merge join: requires both inputs sorted on join keys.

For INNER JOIN, produces output only when keys match.

Implementations

impl MergeJoinNode

pub fn new( left: Box<dyn PlanNode>, right: Box<dyn PlanNode>, left_key_expr: Expr, right_key_expr: Expr, join_type: JoinType, ) -> Self

Trait Implementations

impl PlanNode for MergeJoinNode

fn schema(&self) -> &Schema

Schema of rows produced by this node.

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

Return the next row, or None when exhausted.

fn reset(&mut self) -> Result<()>

Reset the operator for re-execution (e.g., inner side of nested loop join).

fn collect_all(&mut self) -> Result<Vec<Row>>

Collect all remaining rows (convenience method).