Error Creating Foreign Key In Username Check Data Types
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Error Creating Foreign Key On Name (check Data Types)
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Error Creating Foreign Key On Table (check Data Types)
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#1452 - Cannot Add Or Update A Child Row: A Foreign Key Constraint Fails
on [table] (check data types)” up vote 4 down vote favorite The following query fails with error "Error creating foreign key on city (check data types)": ALTER TABLE `hotels` ADD FOREIGN KEY ( `city` ) REFERENCES `mydatabase`.`cities` (`id`) ON DELETE CASCADE ON UPDATE CASCADE ; Basically I want to have a ony-to-many relation between city.id and hotels.city. Here are both tables: CREATE TABLE IF NOT EXISTS `cities` ( `id` int(11) NOT NULL AUTO_INCREMENT, PRIMARY KEY (`id`) ) ENGINE=InnoDB; CREATE TABLE IF NOT EXISTS `hotels` ( `id` int(11) NOT NULL AUTO_INCREMENT, `city` bigint(20) DEFAULT NULL, PRIMARY KEY (`id`), KEY `city` (`city`) ) ENGINE=InnoDB; mysql share|improve this question edited Aug 12 '12 at 22:29 asked Aug 12 '12 at 22:23 hasMobi - Android Apps 3,15943373 Do the tables already have data in them? –Tieson T. Aug 12 '12 at 22:25 Hotels is empty, City has some rows that are already constrained with another table (restaurants) in the same way I am trying for hotels above. It worked the first time, but I built the query by hand, without using phpMyAdmin. –hasMobi - Android Apps Aug 12 '12 at 22:26 One is INT, the other BIGINT. –ypercubeᵀᴹ Aug 12 '12 at 22:26 Did you read the error message? It contains the info to solve the problem. –Pred Oct 22 '15 at 9:37 add a comment| 3 Answers 3 active oldest votes up vote 14 down vote accepted The data types need to match: cities.id int(11) hotels.city bigint(20) Needs to become either: cities.id bigint(20) hotels.city bigint(20) Or: cities.id int(11) hotels.city int(11) Depending on what your appl
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log in tour help Tour Start 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 http://dba.stackexchange.com/questions/142646/error-creating-foreign-key-on-check-data-types or posting ads with us Database Administrators Questions Tags Users Badges Unanswered Ask Question _ Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Error creating foreign key on (check foreign key data types) up vote -1 down vote favorite Very weird problem. I need help, I can't figure out and I don't know how to trace the specific errors in phpmyadmin. I have 2 tables and I want to create FK between them. The first table is keywords: The second table is rankings: When I create FK on domain_id and keyword that working perfect,when I try to create on user_owe_id its says: Error creating foreign key on user_owe_id (check data types) Both error creating foreign columns are the same type and same name I don't know why its not working any hints please?. mysql sql phpmyadmin share|improve this question edited Jun 30 at 9:15 Joe Taras 434311 asked Jun 30 at 8:30 Ravivgg 1 1 Why do you need 2 FKs between the tables? What are their relationships? And what is the primary key of keywords? –ypercubeᵀᴹ Jun 30 at 8:45 1 Please post the SQL statement about creation of FK on user_owe_id –Joe Taras Jun 30 at 8:50 add a comment| active oldest votes Know someone who can answer? Share a link to this question via email, Google+, Twitter, or Facebook. Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Name Email Post as a guest Name Email discard By posting your answer, you agree to the privacy policy and terms of service. Browse other questions tagged mysql sql phpmyadmin or ask your own question. asked 3 months ago viewed 76 times Related 2Lost tables in Drupal site database1Foreign Key Constraint fails-1Cannot create FOREIGN KEY for a table0importing database backup to phpmyadmin return #10641#1046: No database selected in phpMyAdmin3Trying to recover/import/transfer database from MySQL data dir2Error Creating Foreign Key in Oracle1Creating table with foreign key and index using sqlcmd.exe and batch file0When create trigger then after error shown in inserting