ALTER TABLE  `make_and_models` CHANGE  `name`  `name` VARCHAR( 499 ) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL ;
ALTER TABLE  `technical_specs` CHANGE  `details`  `details` TEXT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL ;
ALTER TABLE  `users` CHANGE  `first_name`  `first_name` VARCHAR( 499 ) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL ;
ALTER TABLE  `users` CHANGE  `last_name`  `last_name` VARCHAR( 499 ) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL ;
ALTER TABLE  `users` CHANGE  `email`  `email` TEXT CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NOT NULL ;
ALTER TABLE  `users` CHANGE  `phone`  `phone` VARCHAR( 499 ) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT NULL ;