error 1452 workbench
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 mysql error 1452 foreign key constraint fails site About Us Learn more about Stack Overflow the company Business Learn more
1452 Cannot Add Or Update A Child Row: A Foreign Key Constraint Fails Magento
about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x DismissCannot Add Or Update A Child Row A Foreign Key Constraint Fails On Delete Cascade On Update Cascade)
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 ERROR 1452: CannotError Code 1452 Mysql Insert
add or update a child row: a foreign key constraint fails up vote 4 down vote favorite I have created two tables in MySQL 5.6.11 as shown below by means of MySQL Workbench 5.2.47. The country table: delimiter $$ CREATE TABLE `country` ( `id` int(11) NOT NULL AUTO_INCREMENT, `country_name` varchar(45) DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB AUTO_INC REMENT=2 DEFAULT CHARSET=utf8$$ The state_table: delimiter a foreign key constraint fails mysql insert $$ CREATE TABLE `state_table` ( `id` int(11) NOT NULL AUTO_INCREMENT, `state_name` varchar(45) DEFAULT NULL, `country_id` int(11) DEFAULT NULL, PRIMARY KEY (`id`), CONSTRAINT `country_fk` FOREIGN KEY (`id`) REFERENCES `country` (`id`) ON DELETE CASCADE ON UPDATE CASCADE ) ENGINE=InnoDB AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COMMENT=''$$ There is one row in the country table with the id 1. It allows only one (child) row to be inserted into its child table state_table. If more rows are attempted, then the following error occurs. ERROR 1452: Cannot add or update a child row: a foreign key constraint fails (social_networking.state_table, CONSTRAINT country_fk FOREIGN KEY (id) REFERENCES country (id) ON DELETE CASCADE ON UPDATE CASCADE) SQL Statement: INSERT INTO `social_networking`.`state_table` (`id`, `state_name`, `country_id`) VALUES ('2', 'xxx', '1') Actually, I'm trying to map these tables using an ORM (JPA) where I always see only OneToOne relationship. What am I missing? mysql mysql-workbench mysql-error-1452 share|improve this question edited Aug 27 '15 at 12:07 asked May 8 '13 at 17:53 Tiny 5,21752190347 add a comment| 5 Answers 5 active oldest votes up vote 7 down vote accepted I think you have a typo in your foreign key constraint, country_id should probaby be the fohere for a quick overview of the site Help Center Detailed answers to any questions you on delete no action on update no action might have Meta Discuss the workings and policies of this site cannot add or update a child row a foreign key constraint fails entity framework About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or set foreign_key_checks=0 posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of http://stackoverflow.com/questions/16447137/error-1452-cannot-add-or-update-a-child-row-a-foreign-key-constraint-fails 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Visual MySQL Workbench Error: 1452 foreign key constraint fails? up vote 1 down vote favorite Been looking at this for two days and am at a loss as to what this means. I know it means http://stackoverflow.com/questions/19801627/visual-mysql-workbench-error-1452-foreign-key-constraint-fails "exactly what it says" but I don't know how to fix it. Can someone explain it to me in layman's terms and help me out? ERROR: Error 1452: Cannot add or update a child row: a foreign key constraint fails (`sls11n`.`dependent`, CONSTRAINT `fk_dependent_employee1` FOREIGN KEY (`emp_id`) REFERENCES `employee` (`emp_id`) ON DELETE NO ACTION ON UPDATE NO ACTION) INSERT INTO `sls11n`.`dependent` (`dep_id`, `emp_id`, `dep_ssn`, `dep_fname`, `dep_lname`, `dep_street`, `dep_city`, `dep_state`, `dep_zip`, `dep_phone`, `dep_email`, `dep_notes`) VALUES (NULL, 13, 123456789, 'Gary', 'Hart', 'West St', 'San Diego', 'CA', '23424', '1234567890', 'garyhart@me.com', NULL) Here's the script that I believe is relevant: -- ----------------------------------------------------- -- Table `sls11n`.`employee` -- ----------------------------------------------------- DROP TABLE IF EXISTS `sls11n`.`employee` ; SHOW WARNINGS; CREATE TABLE IF NOT EXISTS `sls11n`.`employee` ( `emp_id` TINYINT UNSIGNED NOT NULL AUTO_INCREMENT, `emp_ssn` INT UNSIGNED NOT NULL, `emp_fname` VARCHAR(15) NOT NULL, `emp_lname` VARCHAR(20) NOT NULL, `emp_street` VARCHAR(45) NOT NULL, `emp_city` VARCHAR(45) NOT NULL, `emp_state` CHAR(2) NOT NULL, `emp_zip` CHAR(9) NOT NULL, `emp_phone` CHAR(15) NOT NULL, `emp_email` VARCHAR(100) NOT NULL, `em
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 http://stackoverflow.com/questions/1253459/mysql-error-1452-cannot-add-or-update-a-child-row-a-foreign-key-constraint-fa more about Stack Overflow the company Business Learn more about hiring developers or posting http://stackoverflow.com/questions/35451461/mysql-workbench-error-1452 ads with us Stack Overflow 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 Mysql error 1452 - Cannot add or update a child foreign key 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 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 foreign key constraint 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 CASCADE ON UPDATE CASCADE ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=latin1 CREATE TABLE `sourcecodes_tags` ( `sourcecode_id` int(11) unsigned NOT NULL, `tag_id` int(11) unsigned NOT NULL, KEY `sourcecode_id` (`sourcecode_id`), KEY `tag_id` (`tag_id`), CONSTRAINT `sourcecodes_tags_ibfk_1` FOREIGN KEY (`tag_id`) REFERENCES `tags` (`id`) ON DELETE CASCADE ON UPDATE CASCADE ) ENGINE=InnoDB DEFAULT CHARSET=latin1 It would be great if anyone could tell
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 company Business Learn more about hiring developers or posting ads with us Stack Overflow 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 MySQL Workbench error 1452 up vote 0 down vote favorite I've trying to create a foreign key from a table to another, using the tools that MySQL Workbench provides, but all that I get is this error: ERROR 1452: Cannot add or update a child row: a foreign key constraint fails (`mediacom`.`#sql-758_4`, CONSTRAINT `med_agente_ibfk_1` FOREIGN KEY (`id_agenzia`) REFERENCES `med_agenzia` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION) SQL Statement: ALTER TABLE `mediacom`.`med_agente` ADD CONSTRAINT `med_agente_ibfk_1` FOREIGN KEY (`id_agenzia`) REFERENCES `mediacom`.`med_agenzia` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION The thing that confuses me the most is the line mediacom.#sql-758_4, since the real query that I use is : ALTER TABLE `mediacom`.`med_agente` ADD INDEX `med_agente_ibfk_1_idx` (`id_agenzia` ASC) COMMENT ''; ALTER TABLE `mediacom`.`med_agente` ADD CONSTRAINT `med_agente_ibfk_1` FOREIGN KEY (`id_agenzia`) REFERENCES `mediacom`.`med_agenzia` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION; The index is inserted fine but the rest is ignored, why? This is the med_agente table CREATE TABLE `med_agente` ( `id` int(11) NOT NULL AUTO_INCREMENT, `nome` varchar(225) DEFAULT NULL, `cognome` varchar(225) DEFAULT NULL, `disabilitato` tinyint(1) DEFAULT NULL, `mod_time` datetime DEFAULT NULL, `mod_user` varchar(255) DEFAULT NULL, `codmobile` decimal(13,0) DEFAULT NULL, `codfisso` decimal(13,0) DEFAULT NULL, `id_agenzia` int(11) DEFAULT NULL, PRIMARY KEY (`id`), KEY `med_agente_ibfk_1_idx` (`id_agenzia`) ) ENGINE=InnoDB AUTO_INCREMENT=4 DEFAULT CHARSET=utf8; And this is med_agenzia CREATE TABLE `med_agenzia` ( `id` int(11) NOT NULL AUTO_INCREMENT, `ragSociale` varchar(255) NOT NULL, `descrizione` varchar(255) DEFAULT NULL, `indirizzo` varchar(255) DEFAULT NULL, `citta` varchar(255) DEFAULT NULL, `CAP` int(11) DEFAULT NULL, `provincia` varchar(255) DEFAULT NULL, `tel` int(11) DEFAULT NULL, `mail` varchar(255) DEFAULT NULL, `codFiscale` varchar(255) DEFAULT NULL, `pIVA` varchar(255) DEFAULT NULL, `id_