set @Sql_Sql =

      N'

	       	select top 1 @m_zw=zw,@m_zh=temp from  ket where zd=''ddd''

	  '

      print @Sql_Sql

      EXEC sp_executesql @Sql_Sql,N'@m_zw varchar(1000) output,@m_zh int output',@m_zw output,@m_zh output

 declare @tssj nvarchar(100)  -- 外部变量

 declare @Sql_Sql nvarchar(100) -- 存sql字符串变量

       set @Sql_Sql =N'select @tssj=jpk from b where bzmc=''中国'''

 EXEC sp_executesql @Sql_Sql,N'@tssj int output',@tssj output

 select @tssj