各部門的統計用戶

Question

我有以下佈局的表：

 

+----+-----------+-------------+ 
| id | name  | department | 
+----+-----------+-------------+ 
| 1| John  | Finance  | 
+----+-----------+-------------+ 
| 2| Bob  | Optics  | 
+----+-----------+-------------+ 
| 3| Jill  | Finance  | 
+----+-----------+-------------+ 
| 4| Jake  | Finance  | 
+----+-----------+-------------+ 
| 5| Mike  | Support  | 
+----+-----------+-------------+ 

我想所有的人都在各部門的總和：

 
+-----------+-------------+ 
| people | department | 
+-----------+-------------+ 
|   3| Finance  | 
+-----------+-------------+ 
|   1| Optics  | 
+-----------+-------------+ 
|   1| Support  | 
+-----------+-------------+ 

我有麻煩建設一個正確的查詢

Answer 1

使用COUNT

SELECT COUNT(name),department FROM table GROUP BY department 

Answer 2

SELECT departmetn, Count(*) as people FROM table Group by departmetn 

Answer 3

試試這個： -

SELECT COUNT(name) AS people,department FROM table GROUP BY department