在我的查询中传递给LEFT或SUBSTRING函数的长度参数无效。它运行完美的ID DTS 2008，但在SSIS 2014中给出了这个错误

Question

DECLARE @ColumnTotal             INT,
        @HTProcOfficeColumnNames NVARCHAR(4000),
        @TBLColumnNames          NVARCHAR(4000),
        @query                   NVARCHAR(4000),
        @subqueryInsert          NVARCHAR(4000),
        @subqueryValues          NVARCHAR(4000)

SELECT @ColumnTotal = Count(*)
FROM   (SELECT htprocoffice
        FROM   table
        WHERE  COLUMN NOT LIKE '% - CO'
        GROUP  BY COLUMN) T

SELECT @HTProcOfficeColumnNames = COALESCE(@HTProcOfficeColumnNames 
           + ',[' + htprocoffice + ']', '[' + htprocoffice + ']')
FROM   (SELECT htprocoffice
        FROM   table
        WHERE  COLUMN NOT LIKE '% - CO'
        GROUP  BY COLUMN) T
ORDER  BY COLUMN

SELECT @TBLColumnNames = COALESCE(@TBLColumnNames + ',' + NAME, NAME)
FROM   table
WHERE  id IN (SELECT id
              FROM   table
              WHERE  type = 'U'
                     AND NAME = 'TableName')
       AND NAME LIKE 'HTOffice%'
ORDER  BY NAME  

以下代码是否有任何错误？

set @subqueryInsert = substring(@TBLColumnNames,1,@ColumnTotal*11-1) --The error occurs here but not sure though. 
set @subqueryInsert = 'INSERT INTO Table  
(RunDate,OrderBy,Period,IConOffice,IConOfficeType,'+ @subqueryInsert+')'
set @subqueryValues =  
replace(replace(@HTProcOfficeColumnNames,'[',''''), ']','''')