当我尝试选择员工姓名、姓名、工资和工资平均值时,它为所有员工返回相同的数字。 这是我输入的查询内容:
SELECT Fname AS EmployeeFirstName, Lname AS EmployeeLastName, Salary AS Sal, (SELECT AVG(Salary) FROM Employee) AS AverageSalary, FROM Employee;
这是结果的截图:
我想计算每个员工的平均工资,有什么想法吗?
您应使用
GROUP BY
SELECT Fname AS EmployeeFirstName, Lname AS EmployeeLastName, Salary AS Sal, AVG(Salary) AS Sal FROM Employee GROUP BY employeeId; -- I've put this but it depends of your table
注意: 您需要将
sql_mode