希望offer多多的牛油很想去夏威夷

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题解 | #平均活跃天数和月活人数#

select CONCAT(YEAR(submit_time),if(MONTH(submit_time)>=10,null,0),MONTH(submit_time)) month, round(count(distinct uid,day(submit_time))/count(disti...

Mysql

2022-03-16

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题解 | #平均活跃天数和月活人数#

select CONCAT(YEAR(submit_time),if(MONTH(submit_time)>=10,null,0),MONTH(submit_time)) month, round(count(distinct uid,day(submit_time))/count(disti...

Mysql

2021-10-30

24 762