MySQL查詢與一個以上的聚合函數

Question

我有這個表：

EMPLOYEES(Code, Name, Surname, Type, Department, Salary) 

我需要顯示與薪酬最高的總費用的部門，而無需使用視圖。那可能嗎？解決方案的觀點是這樣的：

CREATE VIEW DEPEXPENSES (DEPNAME, EXPENSE) AS 
SELECT DEPARTMENT, SUM(SALARY) 
FROM EMPLOYEES 
GROUP BY DEPARTMENT 

SELECT DEPNAME 
FROM DEPEXPENSES 
WHERE EXPENSE=(SELECT MAX(EXPENSE) FROM DEPEXENSES) 

謝謝。

Answer 1

這個問題不太清楚，但我想你想運行你的第二個查詢，而不使用視圖。一個解決方案是這樣的：

select 
    DEPARTMENT, 
    SUM(SALARY) 
from 
    EMPLOYEES 
group by 
    DEPARTMENT 
having 
    SUM(SALARY)=(
    select MAX(SALARY) from (
     select DEPARTMENT, SUM(SALARY) as SALARY 
     from EMPLOYEES 
     group by DEPARTMENT 
    ) s 
)