CREATE TABLE `user_vote` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `user_id` int(11) NOT NULL,
  `voter_user_id` int(11) NOT NULL,
  `product_id` int(11) NOT NULL,
  `vote` tinyint(1) NOT NULL,
  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1