是否有人知道创建此结果的轴的简单方法:
[0-1] [1-2] [2-3] [3-4]
12 45 29 5
此结果是使用查询创建的:
SELECT [0-1] = SUM(CASE WHEN AGE >= 0 AND AGE <= 1 THEN 1 ELSE 0 END),
[1-2] = SUM(CASE WHEN AGE > 1 AND AGE <= 2 THEN 1 ELSE 0 END),
[2-3] = SUM(CASE WHEN AGE > 2 AND AGE <= 3 THEN 1 ELSE 0 END)
FROM dbo.Persons
我想将列值显示为行,即输出应如下所示:
[0-1] 12
[1-2] 45
[2-3] 29
[3-4] 5
欢迎链接到文章/博客。请建议一个简单易懂的解决方案。
答案 0 :(得分:1)
这是一种使用cross join
和聚合的方式:
select ages.minage, ages.maxage,
sum(case when age > ages.minage and age <= ages.maxage then 1 else 0 end) as cnt
from dbo.Persons cross join
(select -1 as minage, 1 as maxage union all
select 1, 2 union all
select 2, 3
) as ages
group by ages.minage, ages.maxage
我喜欢这种方法,因为很容易添加新的年龄范围。请注意,这还包括范围。