维克多阿涛

2022-12-30   阅读量: 67

Mysql

mysql 学习56--RFM均值

-- 4.3 RFM均值

select

avg(R评分) as R均值,

avg(F评分) as F均值,

avg(M评分) as M均值

from

(select

user_id,

case when timestampdiff(day,max(日期),'2014-12-19')<=6 then 5

when timestampdiff(day,max(日期),'2014-12-19')<=12 then 4

when timestampdiff(day,max(日期),'2014-12-19')<=18 then 3

when timestampdiff(day,max(日期),'2014-12-19')<=24 then 2

else 1

end as R评分,

if(count(*)=1,1,if(count(*)=2,2,if(count(*)=3,3,if(count(*)=4,4,5)))) as F评分,

if(sum(amount)<100,1,if(sum(amount)<200,2,if(sum(amount)<300,3,if(sum(amount)<400,4,5)))) as M评分

from userbehavior_new

where behavior_type='buy'

group by user_id) as t;


#3.59842.10392.2051

image.png



扫码加入数据分析学习群
34.2857 2 0 关注作者 收藏

评论(0)


暂无数据

推荐课程

推荐帖子