我想在SQL Server中为多个列创建一个动态数据透视表

Question

我为一个专栏＆＃39; Total＆＃39;编写了动态数据透视查询。哪个工作正常，但我想在SQL Server中的多个列上创建动态数据透视查询，但如果我在聚合函数中使用多个列，则显示错误。

我对单列的查询就像这样

Declare @S  nvarchar(1024)
set @S=''

Select @S = @S + a.[Column] +',' 
from
    (SELECT distinct   
        ISNULL(dbo.tbSubjects.SubCode, 'NoColumnName') as [Column] 
     FROM         
        dbo.tbAttendance 
     INNER JOIN
        dbo.tbAttendanceMaster ON dbo.tbAttendance.MasterAID = dbo.tbAttendanceMaster.AtdID 
     INNER JOIN
        dbo.tbStudent ON dbo.tbAttendance.StID = dbo.tbStudent.StudentID 
     INNER JOIN
        dbo.tbSubjects ON dbo.tbAttendanceMaster.SubID = dbo.tbSubjects.SubID 
     LEFT OUTER JOIN
        dbo.tbSemester ON dbo.tbSubjects.SemID = dbo.tbSemester.SemID) as a

set @S = LEFT(@S, LEN(@S) - 1)
print @S

set @S = 'select Name,'+@S+' from(SELECT  distinct tbStudent.Name,   dbo.tbSubjects.SubCode, dbo.fnTotalDays(dbo.tbAttendanceMaster.SubID, 
dbo.tbStudent.StudentID) AS Total 

FROM         dbo.tbAttendance INNER JOIN
                      dbo.tbAttendanceMaster ON dbo.tbAttendance.MasterAID = dbo.tbAttendanceMaster.AtdID INNER JOIN
                      dbo.tbStudent ON dbo.tbAttendance.StID = dbo.tbStudent.StudentID INNER JOIN
                      dbo.tbSubjects ON dbo.tbAttendanceMaster.SubID = dbo.tbSubjects.SubID LEFT OUTER JOIN
                      dbo.tbSemester ON dbo.tbSubjects.SemID = dbo.tbSemester.SemID ) sq
                      pivot(sum(Total)   for SubCode IN('+@S+') ) as pt

'
print @S

Execute sp_Executesql @S