如何绕过ODPS不支持的笛卡尔积的限制Cartesian product is not allowed without map join
如何绕过ODPS不支持的笛卡尔积的限制需求情景再现withtmp1as(select'保定五洲长城大街店'asa,'华北战区'ascunionallselect'新疆五洲乌鲁木齐店'asa,'西北战区'asc),tmp2as(select'保定五洲'asbunionselect'廊坊五洲'asb)--现在需求想把战区给tmp2表拼上selecttmp2.b,tmp1.cfromtmp1jointm