Struct HashJoinOperator 

pub struct HashJoinOperator { /* private fields */ }

Hash join operator.

Builds a hash table from the build side (right) and probes with the probe side (left). Efficient for equality joins on one or more columns.

Implementations

impl HashJoinOperator

pub fn new( probe_side: Box<dyn Operator>, build_side: Box<dyn Operator>, probe_keys: Vec<usize>, build_keys: Vec<usize>, join_type: JoinType, output_schema: Vec<LogicalType>, ) -> Self

Creates a new hash join operator.

Arguments

• probe_side - Left side operator (will be probed).
• build_side - Right side operator (will build hash table).
• probe_keys - Column indices on probe side for join keys.
• build_keys - Column indices on build side for join keys.
• join_type - Type of join to perform.
• output_schema - Schema of the output (probe columns + build columns).

Trait Implementations

impl Operator for HashJoinOperator

fn next(&mut self) -> OperatorResult

Returns the next chunk of data, or None if exhausted.

fn reset(&mut self)

Resets the operator to its initial state.

fn name(&self) -> &'static str

Returns the name of this operator for debugging.