Hive中随机抽样 在给用户推荐表中,由于待推荐的话题数太多,所以随机抽样检测。表user_recs_categroyuserinfoid 用户IDsimtopicid 话题IDselect a1.userinfoid,a1.simtopicidfrom (select a1.userinfoid,a1.simtopicid,row_number()over(partition by a1.... Hadoop 2023-10-09 36 点赞 0 评论 54 浏览