题解 | #异常的邮件概率#
异常的邮件概率
http://www.nowcoder.com/practice/d6dd656483b545159d3aa89b4c26004e
select date,round(sum(type='no_completed')/count(*),3) p
from email e,user u1,user u2
where send_id=u1.id and receive_id=u2.id and u1.is_blacklist=0 and u2.is_blacklist=0
group by date
order by date
投递腾讯等公司6个岗位 >
哔哩哔哩公司福利 645人发布