如果可能的话，我们可以创建一个年龄范围并显示相同的计数吗？
假设范围在 22 到 25 count: 3 之间，范围在 26 到 30 count: 5 之间。
下面是我尝试执行此操作的人员表:
Age: 26 to 27, comments " post graduate"
Age: 28 to 30, comments "working and single"
Age: 31 to 33, comments " middle level manager and married"
Table name: persons
personid lastname firstname age comments
1 Cardinal Tom 22
2 prabhu priya 33
3 bhandari abhijeet 24
4 Harry Bob 25
5 krishna anand 29
6 hari hara 31
7 ram hara 27
8 kulkarni manoj 35
9 joshi santosh 28
最佳答案
SELECT COUNT(CASE WHEN AGE >= 26 AND AGE <= 27 THEN 1 ELSE NULL END) AS [total26To27]
, COUNT(CASE WHEN AGE >= 28 AND AGE <= 30 THEN 1 ELSE NULL END) AS [total28T30]
, COUNT(CASE WHEN AGE >= 31 AND AGE <= 33 THEN 1 ELSE NULL END) AS [total31T33]
FROM Persons
关于sql - 如何为给定数据创建范围，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/21132735/