按員工數量降序排列部門名稱的SQL查詢

Question

如何編寫SQL查詢以按員工數量降序排列部門名稱？

Answer 1

更好的你可以試試這個

SELECT  Department.DeptName, COUNT(Employee.FName) AS EmpCount 
FROM   Employee INNER JOIN 
         Department ON Employee.DeptId = Department.ID 
GROUP BY Department.DeptName 
order by EmpCount 

Answer 2

如果是不同的表格，可以在ORDER BY部分放置相關的子查詢。或者你可以加入表格，然後將它們分組，然後order by count DESC。

其次是性能