摘要：
--逻辑查询处理的步骤序号(8) SELECT (9) DISTINCT (11) <TOP_SPECIFICATION> <SELECT_LIST>(1) FROM <LEFT_TABLE>(3) <JOIN_TYPE> JOIN<RIGHT_TABLE>(2) ON <JOIN_CONDITION>(4) WHERE <WHERE_CONDITION>(5) GROUP BY <GROUP_BY_LIST>(6) WITH {CUBE | ROLLUP}(7) HAVING <HAVING 阅读全文