我有两个表 - 用户和语言,其主键为“id”的外键链接。 我已经检查过表格的类型是innoDB。我有删除限制和更新-cascade。
此插入查询将其插入语言表:(它可以是多行,因为表单具有动态clickevent按钮而添加)
if(empty($_SESSION['user_id'])) { // user not logged in; redirect to somewhere else }
$sql_insert = "INSERT into `language`
(`native`,`other`,`other_list`,`other_read`, `other_spokint`
,`other_spokprod`,`other_writ` )
VALUES
('$native','$other','$other_list','$other_read','$other_spokint','$other_spokprod',
'$other_writ') ";
mysql_query($sql_insert,$link) or die("Insertion Failed:" . mysql_error());
}
这是完整的错误:
Insertion Failed:Cannot add or update a child row: a foreign key constraint fails
(`members`.`language`, CONSTRAINT `language_ibfk_1` FOREIGN KEY (`id`)
REFERENCES `users` (`id`))
任何帮助将不胜感激!
表格语言的表结构:
CREATE TABLE IF NOT EXISTS `language` (
`id` bigint(20) NOT NULL AUTO_INCREMENT,
`native` varchar(30) NOT NULL,
`other` varchar(30) NOT NULL,
`other_list` varchar(9) NOT NULL,
`other_read` varchar(9) NOT NULL,
`other_spokint` varchar(9) NOT NULL,
`other_spokprod` varchar(9) NOT NULL,
`other_writ` varchar(9) NOT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ;
RELATIONS FOR TABLE `language`:
`id`
`users` -> `id`
答案 0 :(得分:0)
你必须使用这样的结构:
create table users (
id int not null auto_increment,
<additional fields>,
primary key (id)
) ENGINE=InnoDB;
create table language(
id int not null auto_increment,
user_id int not null,
<additional fields>,
primary key (id),
foreign key (user_id) references users(id) on delete restrict on update cascade
) ENGINE=InnoDB;