语法

SELECT * FROM table ORDER BY field1 [ASC|DESC], field2 [ASC|DESC];

ASC升序 DESC降序

例子

//结构
CREATE TABLE `user`  (
  `id` int(11) UNSIGNED NOT NULL AUTO_INCREMENT,
  `name` varchar(10) NOT NULL,
  `sex` tinyint(4) NOT NULL,
  `tel` char(11) NOT NULL,
  PRIMARY KEY (`id`)
)ENGINE=InnoDB DEFAULT CHARACTER SET utf8;

//单个字段排序
SELECT * FROM `user` ORDER BY `id` ASC;

//多个字段排序
SELECT * FROM `user` ORDER BY `id` ASC, `tel` DESC;