訂單表

select firstmon as '月份', count(userid) as '新增', sum(fugou) as '復購人數', sum(fugou)/count(userid) as '復購率' from (select t1.firstmon, t1.userid, if(count(t1.userid)>1, 1, 0) as fugoufrom (select userid, month(min(paytime)) as firstmonfrom `order`group by userid) t1left join `order` t2ont1.userid = t2.userid andt1.firstmon = month(t2.paytime)group byt1.firstmon, t1.userid ) t3 group by firstmon;

總結

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