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-- 3.2.2 浏览—收藏-加购—购买的转化率

select

behavior_type,

count(distinct user_id) as 用户数,

lag(count(distinct user_id),1) over(order by if(behavior_type='pv',1,if(behavior_type='fav',2,if(behavior_type='cart',3,4)))) as 上一行为用户数,

ifnull(count(distinct user_id)/lag(count(distinct user_id),1) over(order by if(behavior_type='pv',1,if(behavior_type='fav',2,if(behavior_type='cart',3,4)))),1) as 转化率

from UserBehavior_new

where behavior_type in ('pv','fav','cart','buy')

group by behavior_type;

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