这里对查询计划的学习主要是对TPC-H中Query2的分析. 1.Query的查询语句 select s_acctbal, s_name, n_name, p_partkey, p_mfgr, s_address, s_phone, s_comment from part, supplier, partsupp, nation, region where p_partkey = ps_partkey and s_suppkey = ps_suppkey and p_size = and p_ty…