sql服务器将声明的变量分配给列名

Question

是否可以执行以下操作？

declare @start_date int
declare @end_date int

set @start_date = 202003
set @end_date = 202004

select
    'Total_Units' as Metric_Description
    ,cast(count(*) as varchar(max)) as @end_date
from table

我正在尝试使用@end_date作为查询结果中列的名称，换句话说，我试图做到这一点，而每个月所有多个查询中的202004都没有更改

select
    'Total_Units' as Metric_Description
    ,cast(count(*) as varchar(max)) as '202004'
from table

Answer 1

declare @start_date int
declare @end_date varchar(20)

set @start_date = 202003
set @end_date = '202004'

declare @query varchar(max)

set @query = 'select
    ''Total_Units'' as Metric_Description
    ,cast(count(*) as varchar(max)) as [' + @end_date + ']
from table'


exec sp_sqlexec @query