SQL查詢來發現的0數和1

Question

我有一個列名Allowed，我想MS SQL查詢來算兩個值0和1

Allowed 
------- 
0 
0 
0 
1 
1 
1 

Answer 1

你可以試試這個：

select count(Allowed) as count 
from yourtable 
group by Allowed 

Answer 2

要獲得允許的數量與各自的值一起：

SELECT Allowed, COUNT(Allowed) AS AllowedCount 
FROM TestTable 
GROUP BY Allowed 

結果：

Allowed AllowedCount 
----------------------- 
    0   3 
    1   3 

工作SQL小提琴：http://sqlfiddle.com/#!3/500b8/3

爲了得到這兩個值0和1的准入計數：

SELECT COUNT(Allowed) AS AllowedCount 
FROM TestTable 
WHERE Allowed IN (0, 1) 

工作SQL小提琴：http://sqlfiddle.com/#!3/500b8/5