Question

Commisions (commisionID INT, EmployeeID, amount INT, created Datetime)

Sales (saleID INT, EmployeeID, amount INT, created datetime)

摘要表：

Employee (employeeID, totalCommisions INT, totalSales INT, created DateTime)

佣金和销售表中每位员工可以有0行或更多行。

查询＃1查询是更新Employee表，将总commision加到员工的totalCommision列中，并将totalSales相同。

查询＃2与上述相同，但将特定日期的总佣金限制为100美元。因此，如果他们每天赚取150美元佣金，则将价值设置为100美元。

Answer 1

试试这个：

UPDATE Employee 
SET    totalCommisions = Commisions.total,
       totalSales = Sales.total
FROM   ( SELECT employeeID, SUM(amount) AS total
         FROM Commisions
         GROUP BY employeeID ) AS Commisions,
       ( SELECT employeeID, SUM(amount) AS total
         FROM Sales
         GROUP BY employeeID ) AS Sales
WHERE  Employee.employeeID = Commisions.employeeID
AND    Employee.employeeID = Sales.employeeID

您应该自己尝试第二个查询。

基于其他2个表更新摘要表

1 个答案: