What product is the least shipped to the postal code 28023?
the least shipped product refers ProductName where MIN(Quantity);
SELECT T4.ProductName FROM Customers AS T1 INNER JOIN Orders AS T2 ON T1.CustomerID = T2.CustomerID INNER JOIN `Order Details` AS T3 ON T2.OrderID = T3.OrderID INNER JOIN Products AS T4 ON T3.ProductID = T4.ProductID WHERE T1.PostalCode = 28023 ORDER BY T3.Quantity LIMIT 1