`result_date` datetime NOT NULL,
KEY `cat_id` (`cat_id`),
KEY `user_id` (`user_id`),
CONSTRAINT `results_ibfk_1` FOREIGN KEY (`cat_id`) REFERENCES `categories` (`id`),
CONSTRAINT `results_ibfk_2` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
`result_date` datetime NOT NULL,
KEY `cat_id` (`cat_id`),
KEY `user_id` (`user_id`),
CONSTRAINT `results_ibfk_1` FOREIGN KEY (`cat_id`) REFERENCES `categories` (`id`),
CONSTRAINT `results_ibfk_2` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;