我试图将SUM
语句与另一列相乘。例如:
SELECT SUM(Orders.Sales)
获得总销售额。
SELECT Employee.Commission_Percentage
获得佣金百分比。
如果我想将这些结合到
中SELECT SUM(Orders.Sales) * Employee.Commission_Percentage AS 'Total Income'
我必须将Employee.Commision_Percentage
放在GROUP BY
子句中。这会抛出计算结果。有没有其他方法可以将SUM
乘以另一个列结果而不将其放入汇总或GROUP BY
?
答案 0 :(得分:2)
如果您想要佣金总额:
SELECT SUM(o.Sales * e.Commission_Percentage)
FROM Orders o JOIN
Employee e
ON o.EmployeeId = e.EmployeeId;
答案 1 :(得分:0)
使用子查询......类似于此:
select
e.employee_id,
s.sales * e.commission_percentage as total_income
from
employee e
join (
select
o.employee_id, sum (o.sales) as sales
from orders.sales as o
group by o.employee_id ) s on
e.employee_id = s.employee_id