显示每个时间段的总和和每个时间跨度的总和

Question

我有一个每月销售的产品，我有用户的电子邮件

我希望看到每封电子邮件每月购买的总金额。

此外，所有月份的每封电子邮件的总金额合计

Answer 1

尝试这样：

我理解这样的问题

     select  email,sum(amount),'2' as ord from ( 
     select email,sum(amount) as amount ,month(d1) from t1 group by 
     month(d1),email) as t group by email

      union all 

      select email,sum(amount) as amount,
     '1' as ord from t1 group by month(d1),email

     order by ord

此查询首先显示每月金额的总和，并在显示每封电子邮件的金额总和之后发送电子邮件