refactor(query): vectorized hash join #13103
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Summary
Vectorized hash join, we now perform probe hash table and key matching separately, this allows us to take advantage of SIMD instructions, after testing partial SQL of TPC-H Q18(
select l_partkey, o_custkey from lineitem, orders where l_orderkey = o_orderkey ignore_result;), the performance of hash join has been improved by~10%(6.6s -> 5.9s).This change is