MySQL Order By用法分享_MySQL
Jun 01, 2016 pm 01:23 PM
bitsCN.com
先按照下面的表结构创建mysql_order_by_test数据表,我们用实例一点一点告诉你,MySQL order by的用法。
ORDER BY uid ASC
按照uid正序查询数据,也就是按照uid从小到大排列
ORDER BY uid DESC
按照uid逆序查询数据,也就是按照uid从大到小排列
我们来看
SELECT * FROM mysql_order_by_test ORDER BY uid ASC
这条语句是按照uid正序查询数据,也就是按照uid从小到大排列
返回的结果就是:
1 张三 1
2 李四 2
3 王二麻子 1
我们来看
SELECT * FROM mysql_order_by_test ORDER BY uid DESC
这条语句是按照uid逆序查询数据,也就是按照uid从大到小排列
返回的结果是:
3 王二麻子 1
2 李四 2
1 张三 1
SQL创建代码:
CREATE TABLE IF NOT EXISTS mysql_order_by_test (
uid int(10) NOT NULL AUTO_INCREMENT,
name char(80) NOT NULL,
sex tinyint(1) NOT NULL,
KEY uid (uid)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 AUTO_INCREMENT=4 ;
INSERT INTO mysql_order_by_test (uid, name, sex) VALUES(1, '张三', 1);
INSERT INTO mysql_order_by_test (uid, name, sex) VALUES(2, '李四', 2);
INSERT INTO mysql_order_by_test (uid, name, sex) VALUES(3, '王二麻子', 1);
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