>SELECT * >FROM OPENXML (@idoc, '/ROOT/Customer/Order/OrderDetail',2) > WITH (OrderID int '../@OrderID', > CustomerID varchar(10) '../@CustomerID', > OrderDate datetime '../@OrderDate', > ProdID int '@ProductID', > Qty int '@Quantity') > > >SELECT * >FROM OPENXML (@idoc, '/ROOT/Customer/Order/OrderDetail') > WITH (CustomerID varchar(10) '../CustomerID', > OrderDate datetime '../OrderDate', > ProdID int '@ProductID', > Qty int '@Quantity')>What is @ ? What different between '../OrderDate' and '../@OrderDate'