基于上面的表结构生成mysql的建表语句

CREATE TABLE users ( id int(11) NOT NULL AUTO_INCREMENT, username varchar(255) NOT NULL, password varchar(255) NOT NULL, email varchar(255) NOT NULL, created_at datetime NOT NULL DEFAULT CURRENT_TIMESTAMP, updated_at datetime NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, PRIMARY KEY (id), UNIQUE KEY username (username), UNIQUE KEY email (email) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;