[英]SQL Syntax error foreign key
I've a problem, i try to connect 2 db table, and if I make the query for make a DB structure the answer is Syntax Error. 我有一个问题,我尝试连接2个db表,如果我查询make数据库结构,答案是语法错误。
I paste the code here, somebody can help me ? 我将代码粘贴到这里,有人可以帮助我吗?
DROP TABLE IF EXISTS album;
CREATE TABLE `album` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`title` varchar(30) DEFAULT NULL,
`description` varchar(200) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=armscii8;
DROP TABLE IF EXISTS picture;
CREATE TABLE `picture` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`id_album` int(11) DEFAULT NULL,
PRIMARY KEY (`id`),
FOREIGN KEY (`id_album`) REFERENCES album(id)
) ENGINE=InnoDB DEFAULT CHARSET=armscii8;
sorry for my bad english. 对不起,我的英语不好。
认为您的id_album
必须具有unsigned
bean,与album
id
相同
Just add Unsigned in Foreign key line as follows : 只需在外键行中添加Unsigned,如下所示:
DROP TABLE IF EXISTS album;
CREATE TABLE `album` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`title` varchar(30) DEFAULT NULL,
`description` varchar(200) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=armscii8;
DROP TABLE IF EXISTS picture;
CREATE TABLE `picture` (
`id` int(11) unsigned NOT NULL AUTO_INCREMENT,
`id_album` int(11) unsigned DEFAULT NULL,
PRIMARY KEY (`id`),
FOREIGN KEY (`id_album`) REFERENCES album(id)
) ENGINE=InnoDB DEFAULT CHARSET=armscii8;
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