mysql查詢找到重複最長時間的值

Question

我需要在b_id中查找值，該值重複最長時間。例如查詢表下方應返回40（NB，查詢應返回單個值）

 
| b_id | s_id | doi  | dos  | charge | 
+------+------+------------+------------+--------+ 
| 10 | 3 | 0000-00-00 | 0000-00-00 | 200 | 
| 10 | 2 | 0000-00-00 | 0000-00-00 | 200 | 
| 20 | 1 | 0000-00-00 | 0000-00-00 | 200 | 
| 30 | 2 | 0000-00-00 | 0000-00-00 | 200 | 
| 40 | 4 | 0000-00-00 | 0000-00-00 | 200 | 
| 40 | 5 | 0000-00-00 | 0000-00-00 | 200 | 
| 70 | 5 | 0000-00-00 | 0000-00-00 | 200 | 
| 40 | 4 | 0000-00-00 | 0000-00-00 | 200 | 

Answer 1

SELECT TOP 1 COUNT(*) as total FROM dbo.Table GROUP BY b_id ORDER BY total DESC 

編輯： 起坐，MySQL的當量：

SELECT COUNT(*) as total FROM dbo.Table GROUP BY b_id ORDER BY total DESC LIMIT 1 

EDIT2： 後評論：

SELECT b_id FROM dbo.Table GROUP BY b_id ORDER BY COUNT(b_id) DESC LIMIT 1