mysql #1005 - Can't create table 'xxx.house_auctions' (errno: 150) (Details…) - mysql

Question

I have no idea why this error is happening. Below is the chain of tables that I use. I don't think this should be anything too difficult. Would appreciate all the help I can get with this.
mysql #1005 - Can't create table 'xxx.house_auctions' (errno: 150) (Details…)
CREATE TABLE IF NOT EXISTS `players` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(255) NOT NULL,
`group_id` int(11) NOT NULL DEFAULT '1',
`account_id` int(11) NOT NULL DEFAULT '0',
`level` int(11) NOT NULL DEFAULT '1',
`vocation` int(11) NOT NULL DEFAULT '0',
`health` int(11) NOT NULL DEFAULT '150',
`healthmax` int(11) NOT NULL DEFAULT '150',
`experience` bigint(20) NOT NULL DEFAULT '0',
PRIMARY KEY (`id`),
UNIQUE KEY `name` (`name`),
KEY `vocation` (`vocation`)
) ENGINE=InnoDB;
CREATE TABLE IF NOT EXISTS `houses` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`owner` int(11) NOT NULL,
`paid` int(10) unsigned NOT NULL DEFAULT '0',
`warnings` int(11) NOT NULL DEFAULT '0',
`name` varchar(255) NOT NULL,
`rent` int(11) NOT NULL DEFAULT '0',
`town_id` int(11) NOT NULL DEFAULT '0',
`bid` int(11) NOT NULL DEFAULT '0',
`bid_end` int(11) NOT NULL DEFAULT '0',
`last_bid` int(11) NOT NULL DEFAULT '0',
`highest_bidder` int(11) NOT NULL DEFAULT '0',
`size` int(11) NOT NULL DEFAULT '0',
`beds` int(11) NOT NULL DEFAULT '0',
PRIMARY KEY (`id`),
KEY `owner` (`owner`),
KEY `town_id` (`town_id`)
) ENGINE=InnoDB;
CREATE TABLE IF NOT EXISTS `house_auctions` (
`house_id` INT UNSIGNED NOT NULL,
`player_id` INT NOT NULL,
`bid` INT UNSIGNED NOT NULL DEFAULT 0,
`limit` INT UNSIGNED NOT NULL DEFAULT 0,
`endtime` BIGINT UNSIGNED NOT NULL DEFAULT 0,
PRIMARY KEY (`house_id`,`player_id`),
FOREIGN KEY (`house_id`) REFERENCES `houses` (`id`) ON DELETE CASCADE,
FOREIGN KEY (`player_id`) REFERENCES `players` (`id`) ON DELETE CASCADE
) ENGINE=InnoDB;

Answer 1

I think the house_auctions columns have different types than the ones you want to reference. Try this (note INT(11) instead of INT UNSIGNED):
CREATE TABLE IF NOT EXISTS `house_auctions` (
`house_id` INT(11) NOT NULL,
`player_id` INT(11) NOT NULL,
`bid` INT UNSIGNED NOT NULL DEFAULT 0,
`limit` INT UNSIGNED NOT NULL DEFAULT 0,
`endtime` BIGINT UNSIGNED NOT NULL DEFAULT 0,
PRIMARY KEY (`house_id`,`player_id`),
FOREIGN KEY (`house_id`) REFERENCES `houses` (`id`) ON DELETE CASCADE,
FOREIGN KEY (`player_id`) REFERENCES `players` (`id`) ON DELETE CASCADE
) ENGINE=INNODB;