Question

I am trying to create a new table for magento and I am trying to reference existing magento tables. From what I googled, the problem that I am getting can be 1 of the 2 issues.

1. The FK must have a index
2. The PK must exist before the FK can reference

In both cases, I believe I did both of these correctly. Below is existing table schemas

ALREADY EXISTING TABLES BEING REFERENCED

CREATE TABLE IF NOT EXISTS `core_store` (
  `store_id` smallint(5) unsigned NOT NULL AUTO_INCREMENT,
  `code` varchar(32) NOT NULL DEFAULT '',
  `website_id` smallint(5) unsigned DEFAULT '0',
  `group_id` smallint(5) unsigned NOT NULL DEFAULT '0',
  `name` varchar(255) NOT NULL,
  `sort_order` smallint(5) unsigned NOT NULL DEFAULT '0',
  `is_active` tinyint(1) unsigned NOT NULL DEFAULT '0',
  PRIMARY KEY (`store_id`),
  UNIQUE KEY `code` (`code`),
  KEY `FK_STORE_WEBSITE` (`website_id`),
  KEY `is_active` (`is_active`,`sort_order`),
  KEY `FK_STORE_GROUP` (`group_id`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COMMENT='Stores' AUTO_INCREMENT=9 ;


CREATE TABLE IF NOT EXISTS `admin_user` (
  `user_id` mediumint(9) unsigned NOT NULL AUTO_INCREMENT,
  `firstname` varchar(32) NOT NULL DEFAULT '',
  `lastname` varchar(32) NOT NULL DEFAULT '',
  `email` varchar(128) NOT NULL DEFAULT '',
  `username` varchar(40) NOT NULL DEFAULT '',
  `password` varchar(100) NOT NULL DEFAULT '',
  `created` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
  `modified` datetime DEFAULT NULL,
  `logdate` datetime DEFAULT NULL,
  `lognum` smallint(5) unsigned NOT NULL DEFAULT '0',
  `reload_acl_flag` tinyint(1) NOT NULL DEFAULT '0',
  `is_active` tinyint(1) NOT NULL DEFAULT '1',
  `extra` text,
  `failures_num` smallint(6) NOT NULL DEFAULT '0',
  `first_failure` datetime DEFAULT NULL,
  `lock_expires` datetime DEFAULT NULL,
  PRIMARY KEY (`user_id`),
  UNIQUE KEY `UNQ_ADMIN_USER_USERNAME` (`username`)
) ENGINE=InnoDB  DEFAULT CHARSET=utf8 COMMENT='Users' AUTO_INCREMENT=25 ;

Table I am trying to create

CREATE TABLE `oro_dashboard` 
( `id` int unsigned NOT NULL, 
`name` varchar(255) NOT NULL default '', 
`description` varchar(64) NOT NULL default '', 
`created_by` int unsigned NOT NULL default '0', 
`created_at` date, 
`layout` varchar(255) NOT NULL default '', 
`default_store_id` int, 
PRIMARY KEY (`id`), 
KEY `IDX_ORO_DASHBOARD_CREATED_BY` (`created_by`), 
CONSTRAINT `FK_ORO_DASHBOARD_CREATED_BY_ADMIN_USER_USER_ID` FOREIGN KEY (`created_by`) REFERENCES `admin_user` (`user_id`) ON DELETE CASCADE ON UPDATE CASCADE, 
CONSTRAINT `FK_ORO_DASHBOARD_DEFAULT_STORE_ID_CORE_STORE_STORE_ID` FOREIGN KEY (`default_store_id`) REFERENCES `core_store` (`store_id`) ON DELETE SET NULL ON UPDATE CASCADE ) 
ENGINE=INNODB charset=utf8 COLLATE=utf8_unicode_ci

In magento, I found there is in deed a table called admin_user that does have a column called user_id. There is a core_store table that does have a column called store_id. and both my columns have INDEXES made.

Does anyone have any clue what the issue maybe ? Below is my error message

#1005 - Can't create table 'db.oro_dashboard' (errno: 150)

Answer 1

It appears that the column definition for default_store_id does not match core_store.store_id. it should be smallint(5) unsigned in your table. created_by has the same problem, although it did not prevent the table from being created