Error Number 1452 Mysql

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Error 1452 Mysql Workbench

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Mysql Error 1452 Foreign Key Constraint Fails

vote favorite I'm receiving an error when I attempt to create two tables. There was a multivalued dependency, so I separated the tables and came up with this: CREATE TABLE NAME ( NameID Integer NOT NULL AUTO_INCREMENT, Name varChar(255) NOT NULL, CONSTRAINT NAME_PK PRIMARY KEY(NameID) ); CREATE TABLE PHONE ( NameID Integer NOT NULL, PhoneNumber varChar(15) NOT NULL, NumType varChar(5) NOT NULL, CONSTRAINT PHONE_FK FOREIGN KEY(NameID) REFERENCES NAME(NameID), CONSTRAINT mysql error 1452 23000 PHONE_PK PRIMARY KEY(NameID) ); But when attempting to add values with this code: INSERT INTO NAME (NameID, Name) VALUES (default, 'John Doe'); INSERT INTO PHONE (NameID, PhoneNumber, NumType) VALUES (default, '706-782-4719', 'Home'); I receive the infamous 1452 error: Error Code: 1452. Cannot add or update a child row: a foreign key constraint fails (`phone_mcneill`.`PHONE`, CONSTRAINT `PHONE_FK` FOREIGN KEY (`NameID`) REFERENCES `NAME` (`NameID`)) I am not entirely sure what this means as I have NameID autoincrementing in the first table. I can't have it auto_increment in the second one as well as it's a foreign key, correct? Thanks in advance for the help. mysql sql database foreign-keys mysql-error-1452 share|improve this question asked Mar 5 '14 at 22:10 Archibald 272215 add a comment| 1 Answer 1 active oldest votes up vote 2 down vote accepted You have defined a foreign key constraint on NameID column i.e in table PHONE using insert for phone table you have passed default against NameID ,but NameID is pointing to NAME table and expecting to have the inserted record id from NAME table it doesn't have a default value as per the docs When a new AUTO_INCREMENT value has been generated, you can also obtain it by executing a SELECT LAST_INSERT_I

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Error Code 1452 Mysql Workbench

Learn more about Stack Overflow the company Business Learn more about hiring developers cannot add or update a child row a foreign key constraint fails mysql or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack a foreign key constraint fails mysql insert 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 Error: 1452: Cannot add or update a http://stackoverflow.com/questions/22210461/mysql-error-code-1452-foreign-key-constraint child row: a foreign key constraint fails up vote 3 down vote favorite 1 I have two tables in my database: order; course. order has a column courseid which references column id of the course table. Whenever I tried to do saveAll() in CakePHP the above SQL error will display and data wont be saved. sql cakephp share|improve this question edited Nov 3 '15 at 12:12 Rolando http://stackoverflow.com/questions/5256703/sql-error-1452-cannot-add-or-update-a-child-row-a-foreign-key-constraint-fail Isidoro 2,90411324 asked Mar 10 '11 at 7:31 Vinay 45127 Please add your model code to your question. Only the relationship bindings –JohnP Mar 10 '11 at 7:39 add a comment| 2 Answers 2 active oldest votes up vote 14 down vote accepted What it sounds is that between your tables you have foreign key constraint in the database. This mean that in the the column course_id you cannot insert values different than ids from the foreign table. The error above means that when you post your data the foreign field is empty or missing. What to look for: 1. Check if in your database the foreign field in the child table can accept NULL. If you have dropdown with values and the default option is empty if the field doesn't accept NULL this error could occur 2. Check your data in the controller if you pass the variable in example: $this->data['Order']['course_id'] if it's empty or missing see point 1. share|improve this answer answered Mar 10 '11 at 9:10 Nik Chankov 5,6891328 add a comment| up vote 0 down vote I am going to respond just for the sake of anyone else with a similar issue looking

here for a quick overview of the site Help Center Detailed answers to any questions you http://stackoverflow.com/questions/17121405/mysql-error-1452-cannot-add-or-update-a-child-row-a-foreign-key-constraint 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 1452 mysql 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 row: a foreign key constraint fails up vote 1 down vote favorite I am able to successfully insert a row in the business table but foreign key constraint 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 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 r