計算新訪uv次日留存率

select
	first_date
	,count(distinct case when by_day=0 then yxuserid else null end) as day_0
	,count(distinct case when by_day=1 then yxuserid else null end) as day_1
	,count(distinct case when by_day=2 then yxuserid else null end) as day_2
	,count(distinct case when by_day=3 then yxuserid else null end) as day_3
	,count(distinct case when by_day=4 then yxuserid else null end) as day_4
	,count(distinct case when by_day=5 then yxuserid else null end) as day_5
	,count(distinct case when by_day=6 then yxuserid else null end) as day_6
	,count(distinct case when by_day>=7 then yxuserid else null end) as day_7plus
from
	(
	select 
		a.yxuserid 
		,log_date 
		,first_date 
		,datediff(log_date,first_date) as by_day
	from 
		(
		select  
			yxuserid 
			,to_date(from_unixtime(floor(createtime/1000))) as log_date 
		from  
			rdb.ods_db_acthd1912shop_tb_yx_common_task_p 
		where 
			ds='2019-12-02' 
			and createtime>=1575043200000
		)a
	left join 
		(
		select  
			yxuserid 
			,min(to_date(from_unixtime(floor(createtime/1000)))) as first_date 
		from  
			rdb.ods_db_acthd1912shop_tb_yx_common_task_p 
		where 
			ds='2019-12-02' 
			and createtime>=1575043200000
        group by yxuserid
		)b
	on 
		a.yxuserid=b.yxuserid
	) as t
group by first_date

參考連接:

注意：這樣算出來的是每天新訪uv隨之而來的留存率，並沒有老用戶

老用戶次日留存參考

select 
	count(distinct a.yxuserid)
	,count(distinct b.yxuserid)
	,count(distinct b.yxuserid)/count(distinct a.yxuserid) 
from 
	(
	select  
		yxuserid 
	from  
		rdb.ods_db_acthd1912shop_tb_yx_common_task_p 
	where 
		ds='2019-12-02' 
		and to_date(from_unixtime(floor(createtime/1000)))='2019-12-02'
	)a
left join 
	(
	select  
		yxuserid 
	from  
		rdb.ods_db_acthd1912shop_tb_yx_common_task_p 
	where 
		ds='2019-12-02' 
		and to_date(from_unixtime(floor(createtime/1000)))='2019-12-03'
	)b
on 
	a.yxuserid=b.yxuserid