默默唇膏
hive 底层模块实现-join
准备数据语句SELECT a.uid,a.name,b.age FROM logs a JOIN users b ON (a.uid=b.uid);我们希望的结果是把users表join进来获取age字段。hive> SELECT * FROM logs;OKa 苹果 5a 橙子 3b 烧鸡 1hive> SELECT * FROM users;OKa 23b
