关于嵌套变量的求教！解决方法

关于嵌套变量的求教！
declare @kc money,@sql varchar(8000)
set @kc=50
......
set @sql='select b.clsname,a.* from ('+@sql+') as a,clsitem b where countn<=变量KC and a.clscode=b.clscode'


代码该如何写啊？是countn<='''+@kc+'''还是什么呢？


[解决办法]

SQL code

countn<=''''+ltrim(@kc)+''''
[解决办法]
SQL code
set @sql='select b.clsname,a.* from ('+@sql+') as a,clsitem b where countn<= '''+@kc+''' and a.clscode=b.clscode'