CREATE TABLE `product_price` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `product_id` int(11) NOT NULL,
  `size_id` int(11) NOT NULL,
  `material_id` int(11) NOT NULL,
  `price` varchar(30) NOT NULL,
  `is_default` tinyint(1) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1