CREATE TABLE `user` (
`id` bigint(20) NOT NULL AUTO_INCREMENT COMMENT 'id',
`user_name` varchar(32) DEFAULT NULL COMMENT '姓名',
`age` int(11) DEFAULT NULL COMMENT '年龄',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;
INSERT INTO `user`(`id`,`user_name`,`age`) VALUES
(1,'张三',6),
(2,'李四',6),
(3,'王五',6);