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从MySQL迁移到MariaDB-外键约束格式不正确

mysql-error-150 mariadb foreign-keys mysql

Brett · 技术社区 · 6 年前

马里亚布 ,而我正在使用的旧版本 ,我很满意。

Query:
/*Table structure for table `blm_wc_download_log` */
CREATE TABLE `blm_wc_download_log` (
  `download_log_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `timestamp` datetime NOT NULL,
  `permission_id` bigint(20) unsigned NOT NULL,
  `user_id` bigint(20) unsigned DEFAULT NULL,
  `user_ip_address` varchar(100) COLLATE utf8mb4_unicode_520_ci DEFAULT '',
  PRIMARY KEY (`download_log_id`),
  KEY `permission_id` (`permission_id`),
  KEY `timestamp` (`timestamp`),
  CONSTRAINT `fk_blm_wc_download_log_permission_id` FOREIGN KEY (`permission_id`) REFERENCES `blm_woocommerce_downloadable_product_permissions` (`permission_id`) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci

Error occured at:2019-02-26 05:30:20
Line no.:9919
Error Code: 1005 - Can't create table `my-db`.`blm_wc_download_log` (errno: 150 "Foreign key constraint is incorrectly formed")

给你 blm_woocommerce_downloadable_product_permissions

CREATE TABLE `blm_woocommerce_downloadable_product_permissions` (
  `permission_id` bigint(20) unsigned NOT NULL AUTO_INCREMENT,
  `download_id` varchar(36) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `product_id` bigint(20) unsigned NOT NULL,
  `order_id` bigint(20) unsigned NOT NULL DEFAULT '0',
  `order_key` varchar(200) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `user_email` varchar(200) COLLATE utf8mb4_unicode_520_ci NOT NULL,
  `user_id` bigint(20) unsigned DEFAULT NULL,
  `downloads_remaining` varchar(9) COLLATE utf8mb4_unicode_520_ci DEFAULT NULL,
  `access_granted` datetime NOT NULL DEFAULT '0000-00-00 00:00:00',
  `access_expires` datetime DEFAULT NULL,
  `download_count` bigint(20) unsigned NOT NULL DEFAULT '0',
  PRIMARY KEY (`permission_id`),
  KEY `download_order_key_product` (`product_id`,`order_id`,`order_key`(16),`download_id`),
  KEY `download_order_product` (`download_id`,`order_id`,`product_id`),
  KEY `order_id` (`order_id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_520_ci;