Mysql Error Error 1452
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Cannot Add Or Update A Child Row A Foreign Key Constraint Fails Mysql
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A Foreign Key Constraint Fails Mysql Insert
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 I
Cannot Add Or Update A Child Row A Foreign Key Constraint Fails On Delete Cascade On Update Cascade)
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 me
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Set Foreign_key_checks=0 Mysql
Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges er_no_referenced_row_2 Ask 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: http://stackoverflow.com/questions/1253459/mysql-error-1452-cannot-add-or-update-a-child-row-a-foreign-key-constraint-fa Sign up Error 1452 MySQL up vote 2 down vote favorite Inserting data into an empty table, but got error 1452. I am not sure why MySQL mentions the NameInfo table within the error. CREATE TABLE NameInfo ( Language VARCHAR(7) NOT NULL, Status VARCHAR(13) NOT NULL, Standard VARCHAR(13) NOT NULL, Name VARCHAR(13) NOT NULL, Name_ID INT(4) NOT NULL, Place_ID INT(9) NOT NULL, http://stackoverflow.com/questions/20028196/error-1452-mysql Supplier_ID INT(4) NOT NULL, Date_Supplied DATE NOT NULL, PRIMARY KEY (Name_ID), FOREIGN KEY (Supplier_ID) REFERENCES Supplier(Supplier_ID), FOREIGN KEY (Place_ID) REFERENCES Place(Place_ID) ); CREATE TABLE Departments ( Dept_ID INT(6) NOT NULL, Dept_NAME VARCHAR(25) NOT NULL, DeptHead_ID INT(6) NOT NULL, DeptAA VARCHAR(20) NOT NULL, ParentDept_ID INT(4) NOT NULL, Location VARCHAR(10) NOT NULL, DeptType VARCHAR(12) NOT NULL, Primary key (Dept_ID) ); CREATE TABLE Employee ( Emp_ID INT(6) NOT NULL, Name VARCHAR(15) NOT NULL, Dept_ID INT(6) NOT NULL, Tax_ID INT(4) NOT NULL, Country VARCAR(15) NOT NULL, Hire_Date DATE NOT NULL, Birth_Date DATE NOT NULL, Salary INT(6) NOT NULL, Bonus INT(6) NOT NULL, AddressInfo VARCHAR(30) NOT NULL, PRIMARY KEY(Emp_ID), FOREIGN KEY(Dept_ID) REFERENCES Departments(Dept_ID) ); Inserted data to parent table, Departments, before child table, Employee. INSERT INTO Departments VALUES (040124,'Human Resource Division',405802,'Mohammed Siddiqui',1001,'California','HR'); INSERT INTO Employee VALUES (901126,'Kenneth Tran',040126,3013,'United States',06/01/2013,06/01/1992,80430,500,'N. 2nd St. Santa Clara, CA.'); ERROR 1452 (23000): Cannot add or update a child: a foreign key constraint fails ('namesinc'_'employee', CONSTRAINT 'employee-ibfk_1 'FOREIGN KEY ('Dept_ID') REFERENCES 'DEPARTMENTS' ('DEPT_ID')) Please let me know if I can provide additional information. mysql foreign-keys share|improve this question edited Nov 17 '13 at 7:52 asked
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 http://stackoverflow.com/questions/17121405/mysql-error-1452-cannot-add-or-update-a-child-row-a-foreign-key-constraint 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 http://stackoverflow.com/questions/14222967/mysql-foreign-key-constraint-error-1452-cannot-add-or-update-child-row community of 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 foreign key fails up vote 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 foreign key constraint 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 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
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 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up MySQL Foreign key constraint - Error 1452 - Cannot add or update child row up vote 3 down vote favorite I've used the other posts on this topic, but I'm having no luck. Here's the code I execute: UPDATE tblOrderItems SET `ItemID` = 0004 WHERE `OrderNum`= 203 AND `OrderItemID` = 26 Here's my error: Error Code: 1452. Cannot add or update a child row: a foreign key constraint fails (`cai0066`.`tblOrderItems`, CONSTRAINT `ItemID` FOREIGN KEY (`ItemID`) REFERENCES `tblCatalogItems` (`ItemID`)) Notes: It happens when I either INSERT or UPDATE into tblOrderItems. tblCatalogItems does have an ItemID of 0004. See: this Here are the create statements generated by MySQL Workbench: delimiter $$ CREATE TABLE `tblCatalogItems` ( `ItemID` varchar(10) NOT NULL DEFAULT '', `ItemName` varchar(50) DEFAULT NULL, `Wholesale` decimal(10,2) DEFAULT NULL, `Cost5-10` decimal(10,2) DEFAULT NULL, `Cost11-19` decimal(10,2) DEFAULT NULL, `Cost20` decimal(10,2) DEFAULT NULL, `Retail` decimal(10,2) DEFAULT NULL, PRIMARY KEY (`ItemID`) ) ENGINE=InnoDB DEFAULT CHARSET=latin1$$ delimiter $$ CREATE TABLE `tblItemCosts` ( `Cost` decimal(10,2) DEFAULT NULL, `VendorID` int(11) NOT NULL, `ItemID` varchar(10) NOT NULL, KEY `VendorID_idx` (`VendorID`), KEY `ItemID_idx` (`ItemID`), CONSTRAINT `VendorID` FOREIGN KEY (`VendorID`) REFERENCES `tblVendors` (`VendorID`) ON DELETE NO ACTION ON UPDATE NO ACTION ) ENGINE=InnoDB DEFAULT CHARSET=latin1$$ delimiter $$ CREATE TABLE `tblOrderItems` ( `OrderItemID` int(11) NOT NULL AUTO_INCREMENT, `OrderNum` int(11) NOT NULL, `PayPalTxnID` int(10) DEFAULT NULL, `Description` varchar(225) DEFAULT NULL, `Quantity` int(11) DEFAULT NULL, `Uni