MySQL查询外键错误

Question

I am inserting this magento database table in mysql database

CREATE TABLE `customer_address_entity` (
  `entity_id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 'Entity Id',
  `entity_type_id` smallint(5) unsigned NOT NULL DEFAULT '0' COMMENT 'Entity Type Id',
  `attribute_set_id` smallint(5) unsigned NOT NULL DEFAULT '0' COMMENT 'Attribute Set Id',
  `increment_id` varchar(50) DEFAULT NULL COMMENT 'Increment Id',
  `parent_id` int(10) unsigned DEFAULT NULL COMMENT 'Parent Id',
  `created_at` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP COMMENT 'Created At',
  `updated_at` timestamp NOT NULL DEFAULT '0000-00-00 00:00:00' COMMENT 'Updated At',
  `is_active` smallint(5) unsigned NOT NULL DEFAULT '1' COMMENT 'Is Active',
  PRIMARY KEY (`entity_id`),
  KEY `IDX_CUSTOMER_ADDRESS_ENTITY_PARENT_ID` (`parent_id`),
  CONSTRAINT `FK_CUSTOMER_ADDRESS_ENTITY_PARENT_ID_CUSTOMER_ENTITY_ENTITY_ID` FOREIGN KEY (`parent_id`) REFERENCES `customer_entity` (`entity_id`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=96 DEFAULT CHARSET=utf8 COMMENT='Customer Address Entity';

But it is displaying error message

#1215 - Cannot add foreign key constraint

How can I fix this error ?

Answer 1

#1215 - Cannot add foreign key constraint

Error indicates that there is a problem with the reference of your foreign key 'customer_entity.entity_id'

You should check if:

• the table 'customer_entity' exists
• the column 'customer_entity.entity_id' exists
• the types of 'customer_address_entity.parent_id' and 'customer_entity.entity_id' are exactly the same
• the charset of tables 'customer_address_entity' and 'customer_entity' are the same

In any case, provide more information about your database's schema or at least more information for the involved tables.