0
不知道爲什麼我仍然遇到問題「錯誤1215」,其中它們具有相同的數據類型並且父表處於主鍵中。錯誤1215:無法添加外鍵約束SQL語句
子表:
CREATE TABLE `customer_notice_type` (
`CUSTOMER_NOTICE_TYPE_ID` int(11) NOT NULL AUTO_INCREMENT,
`CUSTOMER_ID` int(11) NOT NULL,
`CUSTOMER_NOTICE_TYPE_NAME` varchar(50) NOT NULL,
`SYSTEM_NOTICE_TYPE_ID` int(11) NOT NULL,
`STATUS` char(1) NOT NULL,
`CREATED_BY` varchar(50) NOT NULL,
`CREATED_DATE` datetime NOT NULL,
`MODIFIED_BY` varchar(50) DEFAULT NULL,
`MODIFIED_DATE` datetime DEFAULT NULL,
PRIMARY KEY (`CUSTOMER_NOTICE_TYPE_ID`),
KEY `fk_customer_id_customer_notice_type_idx` (`CUSTOMER_ID`),
CONSTRAINT `fk_customer_id_customer_notice_type` FOREIGN KEY (`CUSTOMER_ID`) REFERENCES `customer` (`CUSTOMER_ID`) ON DELETE CASCADE ON UPDATE CASCADE
) ENGINE=InnoDB AUTO_INCREMENT=494 DEFAULT CHARSET=latin1;
父表:
CREATE TABLE `system_notice_type` (
`SYSTEM_NOTICE_TYPE_ID` int(11) NOT NULL,
`SYSTEM_NOTICE_TYPE_NAME` varchar(45) NOT NULL,
`LINE_OF_BUSINESS_ID` int(11) NOT NULL,
`STATUS` char(1) NOT NULL,
PRIMARY KEY (`SYSTEM_NOTICE_TYPE_ID`)
) ENGINE=MyISAM AUTO_INCREMENT=16 DEFAULT CHARSET=latin1;
SQL腳本來創建外鍵:
ALTER TABLE `fexpress`.`customer_notice_type`
ADD CONSTRAINT `fk_system_notice_type_customer_notice_type`
FOREIGN KEY (`SYSTEM_NOTICE_TYPE_ID`)
REFERENCES `fexpress`.`system_notice_type` (`SYSTEM_NOTICE_TYPE_ID`)
ON DELETE CASCADE ON UPDATE CASCADE;
感謝您的回覆。 當你說父表時,你是指客戶表?如果是的話,這已經定義並且正在工作。現在的問題是我無法添加另一個FK約束與「system_notice_type」父表。 – Laurence