select q1.date date, round(count1/count,3) p from (select a.date date, count(a.id) count from (select * from email where send_id not in ( select id from user where is_blacklist = 1 ) and receive_id not in ( select id from user where is_blacklist = 1 )) a ##查找只有正常用户发送给正常用户的邮件信...