如何獲取數據的計數並使用SQL對其進行分類？

Question

我有一個數據庫，如下所示：

現在我想要得到的COUNT的時間，其中分爲小於或大於5秒和GROUP BYName。然後我需要在gridview中顯示數據。

任何人都可以看到SQL命令或任何其他方式來做到這一點嗎？

Answer 1

我想你問的是...

SELECT Name, case when time<5 then 'less' else '5 or over' end, COUNT(*) 
FROM yourtable 
GROUP BY Name , case when time<5 then 'less' else '5 or over' end 

或列

select name, 
    SUM(case when time<5 then 1 else 0 end) as unders, 
    SUM(case when time>=5 then 1 else 0 end) as overs 
from yourtable 
group by name 

Answer 2

SELECT Name, COUNT(Time) 
FROM MyTable 
GROUP BY Name 
HAVING COUNT(Time) > 5 OR COUNT(Time) < 5 

或者

SELECT Name, COUNT(Time) 
FROM MyTable 
GROUP BY Name  
HAVING COUNT(Time) <> 5 

Answer 3

select Name, COUNT(Time) 
FROM Table 
GROUP BY Name 
having COUNT(Time) <>5