SQL Server - SUM(列)*QtyColumn

Question

是否有可能获得总数而不将其返回多行(Group BY)？

例:

数据:

ID    Amount   Quantity
1     50       1 
2     50       2

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

我希望结果排在第1行:

total       totalQuantity 
150         3

Answer 1

干得好

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