Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails 今天在使用load data 将txt文件中的数据导入mysql中的时候,发现了这个错误,产生的原因是外键中的值,在关联的表中并不存在。 AI检测代码解析 load data local infile "E:/javaTest/sql.txt" into table question FIELDS ...
MySQL添加外键失败ERROR 1452 在创建t_money加外键staffId,关联t_staff的id时出现: 最后才发现,原来是我的t_money和t_staff表中已经存在了数据。删除数据后关联成功。
MySQL添加外键失败ERROR 1452的解决 出现: ERROR 1452 : Cannot add or update a child row: a foreign key constraint fails 最后才发现,原来是我的order_items表中已经存在了数据(这才是重点),且orderid这个属性和orders中的不对应,因此如果添加外键,就会导致错误 此时解决的办法不外乎两个: 1.删除数据,再添...
ERROR1452(23000): Cannot add or update a child row: a foreign key constraint fails (`course`.`teacher`, CONSTRAINT `for_teacher_1` FOREIGN KEY (`dept_id`) REFERENCES `dept` (`id`) ON DELETE SET NULL ON UPDATE SET NULL) 排错: mysql>show create table teacher;+---+---+ | Table ...
mysql> insert into pc values('1'); Query OK,1row affected (0.01sec) mysql> insert into pc values('5'); ERROR1452(23000): Cannot add or update a child row: a foreign key constraint fails (`Orange/pc`, CONSTRAINT `pc_ibfk_1` FOREIGN KEY ...
Magento DB Error: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails 1 MySQL - errno 150: "Foreign key constraint is incorrectly formed" 4 Keep getting foreign key constraint failed message in My SQL Hot Network Questions Sharpening and ...
这是因为表设置了外键约束,而你试图插入一条外键字段所在表纪录不存在的一个值.就会报1452错.比如a,b两表,a表外键id值来自b表的ID,当你在a表中插入一条纪录时,id字段用了不在b表id值范围内的值,就会报此错.
vi Chapter 1 MySQL Error Reference This document provides a reference for the various types of error messages in MySQL: • Error messages produced only by the server: Chapter 2, Server Error Message Reference On the server side, error messages may occur during the startup and shutdown ...
Error Code: 1452. Cannot add or update a child row: a foreign key constraint fails (`SoLMySqlDB`.`orders`, CONSTRAINT `fk_orders_users1` FOREIGN KEY (`users_user_id`) REFERENCES `users` (`user_id`) ON DELETE CASCADE ON UPDATE CASCADE) ...
Please note that adding row to order used to work for more than half a year and for some reason it stopped working. The problem is that it happens in production db while in debug db it works great. I compared the two db schemes and they seems to be exactly the same. ...