Struct HashJoin 

pub struct HashJoin { /* private fields */ }

Hash Join executor.

Implements the classic hash join algorithm:

1. Build phase: Create a hash table from the smaller relation
2. Probe phase: Scan the larger relation and probe the hash table

Implementations

impl HashJoin

pub fn new( left_key_index: usize, right_key_index: usize, is_outer_join: bool, ) -> Self

Creates a new hash join executor.

pub fn inner(left_key_index: usize, right_key_index: usize) -> Self

Creates an inner hash join.

pub fn left_outer(left_key_index: usize, right_key_index: usize) -> Self

Creates a left outer hash join.

pub fn execute(&self, left: Relation, right: Relation) -> Relation

Executes the hash join.