如何在SQL Server中为数字添加逗号？

Question

我正在使用SQL Server 2012.我需要为数字添加逗号。前2000年应该是2000。

我该怎么办？谢谢。

这里是我的查询：

declare @Term int = 20172; 

Select 
    'Applications' as 'NEW FIRST-TIME FRESHMEN', 
    Cast(Round(((Cast(y.Last_Term As FLOAT)) * 1), 2) as varchar(10)) as 'Last_Term', 
    Cast(Round(((Cast(y.Current_Term AS FLOAT))*1),2) as varchar(10)) as 'Current_Term', 
    Cast(Round(((Cast(y.Current_Term AS FLOAT) - Cast(y.Last_Term AS FLOAT)) * 1), 2) as varchar(10)) as '#Change', 
    Cast(Round((((Cast(y.Current_Term AS FLOAT) - Cast(y.Last_Term AS FLOAT))/(Cast(y.Last_Term AS FLOAT)))* 100), 2) as varchar(10)) + '%' as '%Change' 
from 
    (Select 
     Case 
      When [ACADEMIC_PERIOD_ALL_SF_COMBINED] = @Term 
       Then 'Current_Term' 
      When [ACADEMIC_PERIOD_ALL_SF_COMBINED] = @Term-10 
       Then 'Last_Term' 
     End ACADEMIC_PERIOD_ALL_SF_COMBINED, 
     [APPLICATION_COUNT] Applied 
    From 
     [IR_DW].[dbo].[vw_dw_Applied_Admitted_Enrolled_F] 
    Where 
     STUDENT_LEVEL ='UG' 
     and STUDENT_POPULATION ='N' 
     and ACADEMIC_PERIOD_ALL_SF_COMBINED between @Term-10 and @Term 
     and ACADEMIC_PERIOD_ALL_SF_COMBINED like '%2') x 
Pivot 
    (sum(Applied) 
     for ACADEMIC_PERIOD_ALL_SF_COMBINED in ([Current_Term] , [Last_Term]) 
)y 

output

Answer 1

真正属于在表示层，但在2012+，你可以使用格式（）。这是一个很棒的功能，但不是一个很好的表演者。

例

Select Format(25302.25,'#,##0') 

返回

25,302 

Answer 2

见类似的问题here。你要做的是CAST首先进行收费，然后CONVERT到VARCHAR。