sql数据库函数val不可识别
我要实现的功能是 取出supportID为1的所有行集合中的goodsN文本字段中的最大值,系统调试时提示val是不可识别的函数,请问各位大大如何解决
 SqlConnection conn;
  conn = new SqlConnection("Server=localhost; Uid=sa;pwd=sa; database=byproduct");
  conn.Open();
  //insert sql  


  string chek = "select max(Conversion.Val(goodsN)) as b from table where supportID ="1"";

  SqlDataAdapter dk = new SqlDataAdapter();  
  dk.SelectCommand = new SqlCommand();
   
  dk.SelectCommand.Connection = conn;
   
  dk.SelectCommand.CommandText = chek;
  DataSet myDataset = new DataSet();
   
  dk.Fill(myDataset, "table");
  string hh = myDataset.Tables["SellingWaste_Info"].Rows[0]["b"].ToString().Trim();

------解决方案--------------------
Tables[ "SellingWaste_Info "]
改为Tables[0]
------解决方案--------------------
myDataset.Tables["table"].Rows[0]["b"]就可以呀