Mysql Error 1452 Cannot Add Update
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Cannot Add Or Update A Child Row A Foreign Key Constraint Fails On Delete Cascade On Update Cascade)
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Mysql Error 1452 Foreign Key Constraint Fails
them; it only takes a minute: Sign up Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails up vote 179 down vote favorite 53 I'm having a bit of a strange problem, I'm trying to add a foreign key to one table that references another, but it is failing for some reason. With a foreign key constraint fails mysql insert my limited knowledge of MySQL, the only thing that could possibly be suspect is that there is a foreign key on a different table referencing the one I am trying to reference. Here is a picture of my table relationships, generated via phpMyAdmin: Relationships I've done a SHOW CREATE TABLE query on both tables, sourcecodes_tags is the table with the foreign key, sourcecodes is the referenced table. CREATE TABLE `sourcecodes` ( `id` int(11) unsigned NOT NULL AUTO_INCREMENT, `user_id` int(11) unsigned NOT NULL, `language_id` int(11) unsigned NOT NULL, `category_id` int(11) unsigned NOT NULL, `title` varchar(40) CHARACTER SET utf8 NOT NULL, `description` text CHARACTER SET utf8 NOT NULL, `views` int(11) unsigned NOT NULL, `downloads` int(11) unsigned NOT NULL, `time_posted` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, PRIMARY KEY (`id`), KEY `user_id` (`user_id`), KEY `language_id` (`language_id`), KEY `category_id` (`category_id`), CONSTRAINT `sourcecodes_ibfk_3` FOREIGN KEY (`language_id`) REFERENCES `languages` (`id`) ON DELETE CASCADE ON UPDATE CASCADE, CONSTRAINT `sourcecodes_ibfk_1` FOREIGN KEY (`user_id`) REFERENCES `users` (`id`) ON DELETE CASCADE ON UPDATE CASCADE, CONSTRAINT `sourcecodes_ibfk_2` FOREIGN KEY (`category_id`) REFERENCES `categories` (`id`) ON DELETE CAS
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Cannot Add Or Update A Child Row A Foreign Key Constraint Fails Entity Framework
the company Business Learn more about hiring developers or posting ads with us Stack mysql replication error 1452 Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of set foreign_key_checks=0 mysql 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up MySQL Error: #1452 - Cannot add or update a child row: a foreign key constraint fails up vote http://stackoverflow.com/questions/1253459/mysql-error-1452-cannot-add-or-update-a-child-row-a-foreign-key-constraint-fa 1 down vote favorite I am able to successfully insert a row in the business table but not the business_contact table. Whenever I try to insert a row in the business_contact table I get the following error: #1452 - Cannot add or update a child row: a foreign key constraint fails Although the row that I'm attempting to insert into the business_contact table has a BusinessID that already exists in the business http://stackoverflow.com/questions/17121405/mysql-error-1452-cannot-add-or-update-a-child-row-a-foreign-key-constraint table. business_contact failed insert statement INSERT INTO business_contact(BusinessID, BusinessContactTypeID, BusinessContactData) VALUES (1, 1, '0097336031000'); mysql database foreign-keys foreign-key-relationship share|improve this question edited Jun 15 '13 at 8:13 asked Jun 15 '13 at 7:53 AlGallaf 1073724 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote accepted You should check the following in your business and contact_type_lookup table: 1. business table has BusinessID value that you are trying to insert into business_contact 2.contact_type_lookuptable hasContactTypeIDvalue that you are trying to insert into business_contact This error is related to either missing BusinessID and or missing ContactTypeID. To verify this please select the BusinessID record from business table and ContactTypeID from contact_type_lookup table. For example: If you are executing the following query: insert into business_contact(BusinessContactID, BusinessID, BusinessContactTypeID, BusinessContactData) values ('1', '2', '3', 'This is the business contact data'); Then, ensure that the following queries returns valid results: select BusinessID from business where BusinessID = 2; select ContactTypeID from business_contact_type where ContactTypeID = 3; share|improve this answer answered Jun 15 '13 at 8:11 vee 27.9k43846 I verified that both rows exists yet I'm getting the same error. If it helps, this is the exact error message: #1452 - Cannot add or update a child row: a foreign key constraint fails (algallaf_dev.business_contact, CONSTRAINT fk_Bu
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies http://stackoverflow.com/questions/8801918/mysql-error-1452-cannot-add-or-update-child-row of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask https://www.experts-exchange.com/questions/28238845/1452-Cannot-add-or-update-a-child-row-a-foreign-key-constraint-fails.html Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign foreign key up Mysql error #1452 - Cannot add or update child row up vote 1 down vote favorite EDIT: My problem was because of the tables used diffrent engines. Table Chart used MyISAM and Chartdata used InnoDB. i have a very simple DB model but for some reason i cant get the Foreign Key to work. I have created the DB with Mysql foreign key constraint Workbench and i have two rows in the 'Chart' table with id 3 and 4. When i try to add a row in chartdata i get this error: INSERT INTO `charts`.`Chartdata` ( `idChartdata` , `param1` , `param2` , `Chart_id` ) VALUES ( NULL , '2012-01-10 05:00:00', '58', '3' ) #1452 - Cannot add or update a child row: a foreign key constraint fails (charts.Chartdata, CONSTRAINTfk_Chartdata_ChartFOREIGN KEY (Chart_id) REFERENCESChart(idChart) ON DELETE CASCADE ON UPDATE CASCADE) I am sure that the foreign key exists, and i have tried to recreate the tables severeal times (with minor changes). Link to DB model: http://i.stack.imgur.com/qKZlh.png This is a SQL dump from PhpMyAdmin: CREATE TABLE IF NOT EXISTS `Chartdata` ( idChartdata int(11) NOT NULL AUTO_INCREMENT, param1 varchar(500) DEFAULT NULL, param2 varchar(500) DEFAULT NULL, Chart_id int(11) NOT NULL, PRIMARY KEY (idChartdata,Chart_id), KEY fk_Chartdata_Chart (Chart_id) ) ENGINE=InnoDB DEFAULT CHARSET=latin1 AUTO_INCREMENT=10 ; ALTER TABLE Chartdata ADD CONSTRAINT fk_Chartdata_Chart FOREIGN KEY (Chart_id) REFERENCES Chart (idChart) ON DELETE CASCADE ON UPDATE CASCADE; mysql foreign-keys mysql-workbench share|improve this question edited Jan 10 '12 at 11:57 asked Jan 10 '12 at 10:40 Lasse Vabe Rolstad 3682311 Cou
for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help Ask a Question Ask for Help Receive Real-Time Help Create a Freelance Project Hire for a Full Time Job Ways to Get Help Expand Search Submit Close Search Login Join Today Products BackProducts Gigs Live Careers Vendor Services Groups Website Testing Store Headlines Experts Exchange > Questions > #1452 - Cannot add or update a child row: a foreign key constraint fails Want to Advertise Here? Solved #1452 - Cannot add or update a child row: a foreign key constraint fails Posted on 2013-09-13 PHP MySQL Server 2 Verified Solutions 9 Comments 15,370 Views Last Modified: 2013-09-13 Whenever I try to create a relationship between one table and another, to create a foreign key, i get the error: #1452 - Cannot add or update a child row: a foreign key constraint fails (`expenses`.