sql - SQL Server - SUM（列）* QtyColumn

Question

是否可以在不返回多行（Group BY）的情况下获得总数？

例子：

数据：

ID    Amount   Quantity
1     50       1 
2     50       2

select sum(Amount) * Quantity, SUM(Quantity) as totalQuantity 
  from tbl

我希望结果在 1 行：

total       totalQuantity 
150         3

Answer 1

干得好

SELECT SUM(Amount*Quantity) as total, SUM(Quantity) as totalQuantity

Answer 2

select sum(Amount * Quantity) as total, 
       sum(Quantity) as totalQuantity
from your_table