Problème lors de la création d'une base de données avec PHP PDO

Question

J'ai un problème avec une requête SQL dans mon application PHP. Lorsque l'utilisateur l'accès pour la première fois, l'application exécute cette requête pour créer toute la base de données:

CREATE TABLE `databases` (
    `id` bigint(20) NOT NULL auto_increment, 
    `driver` varchar(45) NOT NULL, 
    `server` text NOT NULL, 
    `user` text NOT NULL, 
    `password` text NOT NULL, 
    `database` varchar(200) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=2 ; 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `modules` 
-- 

CREATE TABLE `modules` (
    `id` bigint(20) unsigned NOT NULL auto_increment, 
    `title` varchar(100) NOT NULL, 
    `type` varchar(150) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=29 ; 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `modules_data` 
-- 

CREATE TABLE `modules_data` (
    `id` bigint(20) NOT NULL auto_increment, 
    `module_id` bigint(20) unsigned NOT NULL, 
    `key` varchar(150) NOT NULL, 
    `value` tinytext, 
    PRIMARY KEY (`id`), 
    KEY `fk_modules_data_modules` (`module_id`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=184 ; 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `modules_position` 
-- 

CREATE TABLE `modules_position` (
    `user_id` bigint(20) unsigned NOT NULL, 
    `tab_id` bigint(20) unsigned NOT NULL, 
    `module_id` bigint(20) unsigned NOT NULL, 
    `column` smallint(1) default NULL, 
    `line` smallint(1) default NULL, 
    PRIMARY KEY (`user_id`,`tab_id`,`module_id`), 
    KEY `fk_modules_order_users` (`user_id`), 
    KEY `fk_modules_order_tabs` (`tab_id`), 
    KEY `fk_modules_order_modules` (`module_id`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `tabs` 
-- 

CREATE TABLE `tabs` (
    `id` bigint(20) unsigned NOT NULL auto_increment, 
    `title` varchar(60) NOT NULL, 
    `columns` smallint(1) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=12 ; 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `tabs_has_modules` 
-- 

CREATE TABLE `tabs_has_modules` (
    `tab_id` bigint(20) unsigned NOT NULL, 
    `module_id` bigint(20) unsigned NOT NULL, 
    PRIMARY KEY (`tab_id`,`module_id`), 
    KEY `fk_tabs_has_modules_tabs` (`tab_id`), 
    KEY `fk_tabs_has_modules_modules` (`module_id`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `users` 
-- 

CREATE TABLE `users` (
    `id` bigint(20) unsigned NOT NULL auto_increment, 
    `login` varchar(60) NOT NULL, 
    `password` varchar(64) NOT NULL, 
    `email` varchar(100) NOT NULL, 
    `name` varchar(250) default NULL, 
    `user_level` bigint(20) unsigned NOT NULL, 
    PRIMARY KEY (`id`), 
    KEY `fk_users_user_levels` (`user_level`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=4 ; 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `users_has_tabs` 
-- 

CREATE TABLE `users_has_tabs` (
    `user_id` bigint(20) unsigned NOT NULL, 
    `tab_id` bigint(20) unsigned NOT NULL, 
    `order` smallint(2) NOT NULL, 
    `columns_width` varchar(255) default NULL, 
    PRIMARY KEY (`user_id`,`tab_id`), 
    KEY `fk_users_has_tabs_users` (`user_id`), 
    KEY `fk_users_has_tabs_tabs` (`tab_id`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1; 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `user_levels` 
-- 

CREATE TABLE `user_levels` (
    `id` bigint(20) unsigned NOT NULL auto_increment, 
    `level` smallint(2) NOT NULL, 
    PRIMARY KEY (`id`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=3 ; 

-- -------------------------------------------------------- 

-- 
-- Table structure for table `user_meta` 
-- 

CREATE TABLE `user_meta` (
    `id` bigint(20) unsigned NOT NULL auto_increment, 
    `user_id` bigint(20) unsigned default NULL, 
    `key` varchar(150) NOT NULL, 
    `value` longtext NOT NULL, 
    PRIMARY KEY (`id`), 
    KEY `fk_user_meta_users` (`user_id`) 
) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=4 ; 

-- 
-- Constraints for dumped tables 
-- 

-- 
-- Constraints for table `modules_data` 
-- 
ALTER TABLE `modules_data` 
    ADD CONSTRAINT `fk_modules_data_modules` FOREIGN KEY (`module_id`) REFERENCES `modules` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION; 

-- 
-- Constraints for table `modules_position` 
-- 
ALTER TABLE `modules_position` 
    ADD CONSTRAINT `fk_modules_order_modules` FOREIGN KEY (`module_id`) REFERENCES `modules` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION, 
    ADD CONSTRAINT `fk_modules_order_tabs` FOREIGN KEY (`tab_id`) REFERENCES `tabs` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION, 
    ADD CONSTRAINT `fk_modules_order_users` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION; 

-- 
-- Constraints for table `users` 
-- 
ALTER TABLE `users` 
    ADD CONSTRAINT `fk_users_user_levels` FOREIGN KEY (`user_level`) REFERENCES `user_levels` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION; 

-- 
-- Constraints for table `user_meta` 
-- 
ALTER TABLE `user_meta` 
    ADD CONSTRAINT `fk_user_meta_users` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE NO ACTION; 

INSERT INTO `user_levels` VALUES(1, 10); 
INSERT INTO `user_levels` VALUES(2, 1); 


INSERT INTO `users` VALUES(1, 'admin', 'password', 'changethis@testing.com', NULL, 1); 
INSERT INTO `user_meta` VALUES (NULL, 1, 'last_tab', 1); 

Dans certains environnements je reçois cette erreur:

SQLSTATE[HY000]: General error: 1005 Can't create table 'dms.databases' (errno: 150)

J'ai essayé tout ce que je pouvais trouver sur Google mais rien ne fonctionne.

La partie étrange est que si j'exécute cette requête dans PhpMyAdmin, il crée ma base de données, sans aucune erreur.

Answer 1

Le problème est susceptible d'être dans la partie contraintes de vos requêtes.

L'erreur 150 est mentionné dans la documentation InnoDB:

If you re-create a table that was dropped, it must have a definition that conforms to the foreign key constraints referencing it. It must have the right column names and types, and it must have indexes on the referenced keys, as stated earlier. If these are not satisfied, MySQL returns error number 1005 and refers to error 150 in the error message.

If MySQL reports an error number 1005 from a CREATE TABLE statement, and the error message refers to error 150, table creation failed because a foreign key constraint was not correctly formed. Similarly, if an ALTER TABLE fails and it refers to error 150, that means a foreign key definition would be incorrectly formed for the altered table. You can use SHOW ENGINE INNODB STATUS to display a detailed explanation of the most recent InnoDB foreign key error in the server.

Source: http://dev.mysql.com/doc/refman/5.1/en/innodb-foreign-key-constraints.html

Il se produit également si les définitions des références ne sont pas identiques (c.-à-un est signé, l'un est non signé bigint) ou en mélangeant des index uniques sur plusieurs colonnes avec eux.