Error 1451 Cannot Delete Or Update A Parent Row
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Cannot Delete Or Update A Parent Row A Foreign Key Constraint Fails Mysql
Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Cannot delete or update a parent row: a foreign key constraint fails up vote 63 down vote favorite 27 When doing: DELETE FROM `jobs` WHERE `job_id` =1 cannot delete or update a parent row a foreign key constraint fails hibernate LIMIT 1 It errors: #1451 - Cannot delete or update a parent row: a foreign key constraint fails (paymesomething.advertisers, CONSTRAINT advertisers_ibfk_1 FOREIGN KEY (advertiser_id) REFERENCES jobs (advertiser_id)) Here are my tables: CREATE TABLE IF NOT EXISTS `advertisers` ( `advertiser_id` int(11) unsigned NOT NULL AUTO_INCREMENT, `name` varchar(255) NOT NULL, `password` char(32) NOT NULL, `email` varchar(128) NOT NULL, `address` varchar(255) NOT NULL, `phone` varchar(255) NOT NULL, `fax` varchar(255) NOT NULL, `session_token` char(30) NOT NULL, PRIMARY KEY (`advertiser_id`), UNIQUE KEY `email` (`email`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=2 ; INSERT INTO `advertisers` (`advertiser_id`, `name`, `password`, `email`, `address`, `phone`, `fax`, `session_token`) VALUES (1, 'TEST COMPANY', '', '', '', '', '', ''); CREATE TABLE IF NOT EXISTS `jobs` ( `job_id` int(11) unsigned NOT NULL AUTO_INCREMENT, `advertiser_id` int(11) unsigned NOT NULL, `name` varchar(255) NOT NULL, `shortdesc` varchar(255) NOT NULL, `longdesc` text NOT NULL, `address` varchar(255) NOT NULL, `time_added` int(11) NOT NULL, `active` tinyint(1) NOT NULL, `moderated` tinyint(1) NO
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How To Delete A Row With Foreign Key Constraint In Sql
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Cannot Update A Parent Row: A Foreign Key Constraint Fails
hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join mysql delete cascade foreign key the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up ERROR 1451: Cannot delete or http://stackoverflow.com/questions/1905470/cannot-delete-or-update-a-parent-row-a-foreign-key-constraint-fails update a parent row: a foreign key constraint fails up vote 3 down vote favorite CREATE TABLE `categories` ( `idcategories` INT NOT NULL AUTO_INCREMENT , `idparent` INT NULL , `description` VARCHAR(45) NULL , PRIMARY KEY (`idcategories`) ); ALTER TABLE `categories` ADD CONSTRAINT `FK_idparent` FOREIGN KEY (`idparent` ) REFERENCES `ilmercatinodelpulcino`.`categories` (`idcategories` ) ON DELETE CASCADE ON UPDATE CASCADE , ADD INDEX `FK_idparent` (`idparent` ASC) ; INSERT http://stackoverflow.com/questions/10320786/error-1451-cannot-delete-or-update-a-parent-row-a-foreign-key-constraint-fails INTO `categories` (`idcategories`, `description`) VALUES (1, 'cat1'); INSERT INTO `categories` (`idcategories`, `idparent`, `description`) VALUES (2, 1, 'cat1_child'); So this table represents a category, with an ID and a self pointing parent ID. I have inserted a category cat1 and a subcategory cat1_child with parent id of cat1. Now, I want to be able to change idcategory of cat1 from 1 to 10 and because I set the foreign key on update CASCADE, I expect that idparent of cat1_child will be set to 10 as well. But when I do: UPDATE `categories` SET `idcategories`=10 WHERE `idcategories`='1'; I get an error: ERROR 1451: Cannot delete or update a parent row: a foreign key constraint fails (categories, CONSTRAINT FK_idparent FOREIGN KEY (idparent) REFERENCES categories (idcategories) ON DELETE CASCADE ON UPDATE CASCADE) SQL Statement: UPDATE categories SET idcategories=10 WHERE idcategories='1' The delete instead work as expected and deleting cat1, cat1_child will be deleted as well. Where is the error? Than you. sql cascade mysql-error-1451 share|improve this question edited Sep 5 at 7:07 Timo Huovinen 20.4k208698 asked Apr 25 '12 at 17:32 Simone Conti 88411 possible duplicate of MySQL: ON UPDATE CASCADE for a simple table "id|parent|text", no
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the http://stackoverflow.com/questions/30485245/sql-cannot-delete-or-update-parent-row-a-foreign-key-constraint-fails company Business Learn more about hiring developers or posting ads with us Stack Overflow https://www.reddit.com/r/learnprogramming/comments/2id5yu/mysql_error_1451_cannot_delete_or_update_a_parent/ Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up SQL: Cannot delete or update parent row: a foreign key constraint fails up vote 0 down vote favorite Whenever foreign key I try to delete a survey from table "survey" like this: DELETE FROM surveys WHERE survey_id = 77 It prompts me an error stated below: #1451 - Cannot delete or update a parent row: a foreign key constraint fails ('user_surveys_archive', CONSTRAINT 'user_surveys_archive_ibfk_6' FOREIGN KEY ('user_access_level_id') REFERENCES 'user_surveys' ('user_access_level_id') ON DELETE NO ACTION) First thing: I do not any such table with this name "user_surveys_archive_ibfk_6" 2nd thing: There is no record of this survey update a parent in other tables. Any idea on how can I delete this record of fix this issue? Edit This is the line I found when I export the table Constraints for tablesurveys` ALTER TABLE surveys ADD CONSTRAINT surveys_ibfk_1 FOREIGN KEY (survey_type_id) REFERENCES survey_types (survey_type_id) ON DELETE CASCADE ON UPDATE NO ACTION;` mysql sql mysqli phpmyadmin share|improve this question edited May 27 '15 at 14:49 asked May 27 '15 at 14:19 atif 62551949 1 user_surveys_archive_ibfk_6 is the name of the foreign key constraint, and generally can be absolutely anything you want - it's just a name, after all. it looks like an auto-generated one, so it's most likely in the user_surveys_archive table. –Marc B May 27 '15 at 14:21 But there is no column in survey table with this title "user_access_level_id". Any idea on how to debug it? –atif May 27 '15 at 14:27 maybe you broke the FK system by doing some alter queries with foreign_key_checks turned off. once the check is re-enabled, mysql won't scan the DB to verify all FKs are working, so you wouldn't have noticed until you tried a query which uses/refers to the now-nonexistent fields/tables. –Marc B May 27 '15 at 14:29 3 it'll hide the error, since you've disabled the FK checking. it won't FI
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