查询的意外行为

时间:2011-04-06 13:10:31

标签: mysql indexing

此特定查询应该将用户输入数据库。

此查询并不总是插入firstname和lastname字段的值以及其他字段。对于一些插入,firstname和lastname为空,对于其他插入,firstname和lastname按预期工作。

INSERT INTO `users` (mobile, passwordHash, firstname, lastname, ent_id, email )
VALUES ('913800341127', '678a1491514b7f1006d605e9161946b1', 'nat', 'sam', '108', NULL)
ON DUPLICATE KEY UPDATE `firstname` = VALUES(firstname),`lastname` = VALUES(lastname)

相关信息:

CREATE TABLE `users` (
 `id` int(11) NOT NULL auto_increment,
 `tag` varchar(5) NOT NULL default 'ind',
 `username` varchar(50) default NULL,
 `firstname` varchar(100) default NULL,
 `lastname` varchar(100) default NULL,
 `passwordhash` varchar(255) NOT NULL,
 `secretq` varchar(255) default NULL,
 `secreta` varchar(100) default NULL,
 `email` varchar(50) default NULL,
 `mobile` varchar(13) default NULL,
 `last_login` datetime default NULL,
 `ent_id` bigint(20) NOT NULL default '1',
 `is_inactive` tinyint(1) NOT NULL COMMENT 'Whether the user is active or not',
 PRIMARY KEY  (`id`),
 UNIQUE KEY `mobile_2` (`mobile`,`ent_id`),
 UNIQUE KEY `email_2` (`email`,`ent_id`),
 KEY `username` (`username`),
 KEY `ent_id` (`ent_id`,`tag`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1

1 个答案:

答案 0 :(得分:1)

语法错误应该是:

ON DUPLICATE KEY UPDATE firstname = 'nat',lastname = 'sam'