create table `user`(
     `id` int(11) NOT NULL AUTO_INCREMENT,
     `username` varchar(255) NOT NULL,
     `password` varchar(255) NOT NULL,
     PRIMARY KEY (`id`),
     UNIQUE KEY `username`(`username`)
);

create table `post`(
     `post_id` int(11) NOT NULL AUTO_INCREMENT,
     `user_id` varchar(255) NOT NULL,
     `post_title` varchar(255) NOT NULL,
     `post_content` varchar(2000) NOT NULL,
     PRIMARY KEY (`post_id`)
);