摘要: 答案: hive> select *,row_number() over (partition by product_no order by start_time desc) from table1; 知识点: 1、row_number hive (test)> select *, row_numb 阅读全文
posted @ 2016-12-02 17:58 OnTheWay_duking 阅读(1927) 评论(0) 推荐(0) 编辑
摘要: 答案: 结果 阅读全文
posted @ 2016-12-02 16:24 OnTheWay_duking 阅读(777) 评论(0) 推荐(0) 编辑