我使用以下代码创建了一个表
CREATE TABLE `Notes` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`created` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
`title` text,
`content` text,
`public` tinyint(1) DEFAULT NULL,
`userid` int(11) NOT NULL,
`beerid` int(11) NOT NULL,
PRIMARY KEY (`id`),
KEY `userid` (`userid`),
KEY `beerid` (`beerid`),
CONSTRAINT `Notes_ibfk_1` FOREIGN KEY (`userid`) REFERENCES `Users` (`id`),
CONSTRAINT `Notes_ibfk_2` FOREIGN KEY (`beerid`) REFERENCES `Beers` (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=latin1;
第87行的错误1005(HY000):无法创建表
beersafe
。Notes
(错误号:121“写入或更新时出现重复密钥”)
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(来自评论)
CREATE TABLE Beers (
id int(11) NOT NULL AUTO_INCREMENT,
name varchar(50) DEFAULT NULL,
image text,
alcohol float DEFAULT NULL,
color varchar(50) DEFAULT NULL,
category text,
description text,
PRIMARY KEY (id)
) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=latin1;
CREATE TABLE Users (
id int(11) NOT NULL AUTO_INCREMENT,
email text,
password text,
name text,
PRIMARY KEY (id)
) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=latin1;
SELECT *
FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS
WHERE CONSTRAINT_NAME IN ('Notes_ibfk_1', 'Notes_ibfk_2');
| def | BeerSafe | Notes_ibfk_1 | BeerSafe | Notes | FOREIGN KEY |
| def | BeerSafe | Notes_ibfk_2 | BeerSafe | Notes | FOREIGN KEY |
答案 0 :(得分:0)
我使用以下代码创建表“ Notes”
创建表Notes
(
id
int(11)NOT NULL AUTO_INCREMENT,
created
时间戳记非空默认CURRENT_TIMESTAMP开启UPDATE CURRENT_TIMESTAMP,
title
文字,
content
文字,
public
tinyint(1)缺省为NULL,
userid
int(11)NOT NULL,
beerid
int(11)NOT NULL,
主键(id
),
键userid
(userid
),
键beerid
(beerid
)
)ENGINE = InnoDB AUTO_INCREMENT = 5 DEFAULT CHARSET = latin1;
已删除
”
约束Notes_ibfk_1
外键(userid
)参考Users
(id
),
约束Notes_ibfk_2
外键(beerid
)参考Beers
(id
)
“