MySQL 错误：1452

Question

    Error Code: 1452. Cannot add or update a child row:

 a foreign key constraint fails
(`test`.`system_review`, CONSTRAINT `system_review_ibfk_1` FOREIGN KEY (`SYS_USER_ID`) REFERENCES `user_details` (`USER_ID`))

Help me to solve this error

Answer 1

Possibly you have set Relationship between your two tables. And you are trying to update base record id, which is used by your child table.