MySQL查詢獲取所有誰在爲員工研磨器數量比10

Question

MySQL查詢獲取所有誰在爲員工研磨器數量比10

應該優化查詢，並應執行得更快部門名稱部門名稱。

Answer 1

SELECT dept.name，COUNT（employee.id）作爲從部門的empcount INNER JOIN員工ON dept.id = employee.deptId GROUP BY dept.id HAVING empcount> 10;