maxcompute 开发中间表

left join或者inner join 都需要确保每个表的条目唯一,比如userid唯一,不然会有重复的数据,

可以使用

select userid,customeruid,count(*) from dim_customer_info_df where pt='20210713' group by userid,customeruid order by COUNT(*) desc limit 100; 校验
原文地址:https://www.cnblogs.com/yjybupt/p/15009901.html