sql 语句
create table if not exists student(
`id` INT AUTO_INCREMENT PRIMARY KEY,
`name` VARCHAR(255) NOT NULL DEFAULT '' COMMENT '姓名',
`age` TINYINT UNSIGNED not null DEFAULT 0 COMMENT '年龄',
`sex` TINYINT UNSIGNED not null DEFAULT 10 COMMENT '性别',
`created_at` INT not null DEFAULT 0 COMMENT '新增时间',
`updated_at` INT not null DEFAULT 0 COMMENT '修改时间'
)ENGINE=INNODB DEFAULT CHARSET=UTF8 AUTO_INCREMENT=1001 COMMENT='学生表';