特别郁闷2005里写的存储过程怎么解决字符串长度问题？

存储过程内容

ALTER PROCEDURE [dbo].[GetPageDataOutRowPageCount]
(
@PageIndex int = 1,--当前页数
@PageSize int = 4,--每页大小
@NowPage int = 1,--根据传入栏目id要加载当前页的数据
@RowCount int output,--总行数(传出参数)
@PageCount int output--总页数(传出参数)
)
AS
begin
DECLARE @sql NVARCHAR(225),@sqlCount NVARCHAR(225)
select @RowCount =COUNT(FCaseChildId),@PageCount=CEILING((COUNT(FCaseChildId)+0.0)/@PageSize) FROM TCaseContent where FParentsId=@NowPage
SET @sql='SELECT TOP'+str(@PageSize)+' * FROM TCaseContent where FParentsId='+str(@NowPage)+'and FCaseChildId not in(select top '+str((@PageIndex-1)*@PageSize) +' FCaseChildId from TCaseContent where FParentsId='+str(@NowPage)+' order by FImageUpTime desc ) order by FImageUpTime desc'
print @sql
EXEC(@sql)
end

编译器生成的

SELECT TOP         2 * FROM TCaseContent where FParentsId=         3and FCaseChildId not in(select top          2 FCaseChildId from TCaseContent where FParentsId=         3 order by FImageUpTime desc ) order by FImageUpTime d

这一看最后的desc就没了  但是在存储过程里去掉几个空格  语句能正确执行  

 那么像SELECT TOP         2 这里生成的空格明显多余这可以用LTRIM去掉 长度限制怎么解决?

谢谢