MySQL的外键和表不与错误号创建105

Question

我尝试使用下面的SQL添加一些表格，数据库，问题是它创建的第一个表，而是抛出一个错误：

[Err] 1005 - Can't create table 'BigBlockStudios_woodcraft.sbb_categories' (errno: 150) 

当我尝试运行它。

SET FOREIGN_KEY_CHECKS=0; 

-- ---------------------------- 
-- Table structure for `sbb_catalog` 
-- ---------------------------- 
DROP TABLE IF EXISTS `sbb_catalog`; 
CREATE TABLE `sbb_catalog` (
    `id` int(8) unsigned NOT NULL AUTO_INCREMENT, 
    `sku` varchar(50) NOT NULL, 
    `category` int(8) NOT NULL, 
    `type` int(8) NOT NULL, 
    `make` int(8) NOT NULL, 
    `model` int(8) NOT NULL, 
    `year` int(8) NOT NULL, 
    PRIMARY KEY (`id`), 
    INDEX (`category`,`type`,`make`,`model`,`year`), 
    FOREIGN KEY (`category`) REFERENCES sbb_categories(`id`) ON DELETE NO ACTION ON UPDATE NO ACTION, 
    FOREIGN KEY (`type`) REFERENCES sbb_type(`id`) ON DELETE NO ACTION ON UPDATE NO ACTION, 
    FOREIGN KEY (`make`) REFERENCES sbb_make(`id`) ON DELETE NO ACTION ON UPDATE NO ACTION, 
    FOREIGN KEY (`model`) REFERENCES sbb_model(`id`) ON DELETE NO ACTION ON UPDATE NO ACTION, 
    FOREIGN KEY (`year`) REFERENCES sbb_year(`id`) ON DELETE NO ACTION ON UPDATE NO ACTION 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

-- ---------------------------- 
-- Table structure for `sbb_categories` 
-- ---------------------------- 
DROP TABLE IF EXISTS `sbb_categories`; 
CREATE TABLE `sbb_categories` (
    `id` int(8) unsigned NOT NULL AUTO_INCREMENT, 
    `category` varchar(50) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1; 

-- ---------------------------- 
-- Table structure for `sbb_makes` 
-- ---------------------------- 
DROP TABLE IF EXISTS `sbb_makes`; 
CREATE TABLE `sbb_makes` (
    `id` int(8) unsigned NOT NULL AUTO_INCREMENT, 
    `make` varchar(50) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1; 

-- ---------------------------- 
-- Table structure for `sbb_models` 
-- ---------------------------- 
DROP TABLE IF EXISTS `sbb_models`; 
CREATE TABLE `sbb_models` (
    `id` int(8) unsigned NOT NULL AUTO_INCREMENT, 
    `model` varchar(50) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1; 

-- ---------------------------- 
-- Table structure for `sbb_vehicle_types` 
-- ---------------------------- 
DROP TABLE IF EXISTS `sbb_vehicle_types`; 
CREATE TABLE `sbb_vehicle_types` (
    `id` int(8) unsigned NOT NULL AUTO_INCREMENT, 
    `type` varchar(50) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1; 

-- ---------------------------- 
-- Table structure for `sbb_years` 
-- ---------------------------- 
DROP TABLE IF EXISTS `sbb_years`; 
CREATE TABLE `sbb_years` (
    `id` int(8) unsigned NOT NULL AUTO_INCREMENT, 
    `year` decimal(4,0) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=latin1; 

我第一次尝试创建与关系构建InnoDB表[努力学习一些谊]

我在做什么错在这里？

Answer 1

我敢肯定，原因是id列sbb_categories和category,sbb_catalog之间的数据类型不匹配。从前者中删除unsigned或将其添加到后者。 对于所有其他外键引用也是如此。

由于@Mihai在评论你也有不匹配的名字中指出 - 这显然需要例如要这么改：

FOREIGN KEY (`type`) REFERENCES sbb_type(`id`) 

应改为

FOREIGN KEY (`type`) REFERENCES sbb_types(`id`) 

进行这些更改会使其正常工作（至少在SQL Fiddle）