生成用户表的SQL语句

CREATE TABLE users ( id INT(11) NOT NULL AUTO_INCREMENT, username VARCHAR(50) NOT NULL, password VARCHAR(255) NOT NULL, email VARCHAR(255) NOT NULL, created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP, updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, PRIMARY KEY (id), UNIQUE KEY username (username), UNIQUE KEY email (email) ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;