Mysql Error 1451 Cannot Delete Or Update A Parent Row
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How To Delete A Row With Foreign Key Constraint In Sql
Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow mysql delete cascade foreign key 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 cannot update a parent row: a foreign key constraint fails other. Join them; it only takes a minute: Sign up ERROR 1451: 1451: Cannot delete or update a parent row: a foreign key constraint fails up vote 1 down vote favorite 1 I have been searching for this error and stumbled upon a few questions of the same nature, but as i understand it, they seem to be concerned
Delete Row With Foreign Key Constraint Mysql
on UPDATING issue. Mine stems from DELETING of an entry. Here's how my table is made of: CREATE TABLE `product` ( `product_id` mediumint(8) unsigned NOT NULL AUTO_INCREMENT COMMENT 'represents unique identifier for every existing products', `code` varchar(20) NOT NULL, `name` varchar(45) NOT NULL COMMENT 'description', `price` decimal(11,4) NOT NULL, `short_name` varchar(10) NOT NULL COMMENT 'name that can be used quickly to referenc or immediately know what is the product', `count` bigint(19) unsigned NOT NULL DEFAULT '0', `product_type_id` smallint(5) unsigned NOT NULL DEFAULT '0', `is_active` bit(1) NOT NULL DEFAULT b'0', PRIMARY KEY (`product_id`), KEY `product_product_typeFK_idx` (`product_type_id`), CONSTRAINT `product_product_typeFK` FOREIGN KEY (`product_type_id`) REFERENCES `product_type` (`product_type_id`) ON DELETE NO ACTION ON UPDATE NO ACTION ) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8; Then it also has some accompanying TRIGGER which inserts some data: USE `RFVPOS`; DELIMITER $$ CREATE TRIGGER `Product_BDEL` BEFORE DELETE ON `product` FOR EACH ROW BEGIN INSERT INTO `product_audit` (product_id, code, name, short_name, price, count, delete_user, delete_date ) values (OLD.product_id, OLD.code, OLD.name, OLD.short_name, OLD.price, OLD.count, CURRENT_USER(), NOW() ); END Here as well is the structure of 'product_audit':
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Mysql2::error: Cannot Delete Or Update A Parent Row: A Foreign Key Constraint Fails Rails
is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Another Foreign Key Issue - #1451 - Cannot delete or update a parent http://stackoverflow.com/questions/26696534/error-1451-1451-cannot-delete-or-update-a-parent-row-a-foreign-key-constraint row: a foreign key constraint fails up vote 1 down vote favorite When doing this in MySQL: UPDATE `client_therapist` SET `therapist_id` = 3 LIMIT 1 ; I get the following error: #1451 - Cannot delete or update a parent row: a foreign key constraint fails (`test_structure`.`client_group`, CONSTRAINT `client_group_therapist_id` FOREIGN KEY (`therapist_id`) REFERENCES `client_therapist` (`therapist_id`) ON DELETE NO ACTION ON UPDATE NO ACTION) I've searched all over and have read several http://stackoverflow.com/questions/16127035/another-foreign-key-issue-1451-cannot-delete-or-update-a-parent-row-a-fore of the foreign key questions asked here on StackOverflow... to no avail. I don't think I'm completely understanding foreign keys at this point. Here is my DB structure: The foreign key that is causing issues is on the client_group table. How I understand it is it's saying "whenever a row is added, the therapist_id must match a therapist_id in the client_therapist table." Just typing this out made me realize part of the issue is that when a client_group is added, it might be getting bound to a certain row in the client_therapist table. So then if I try to update that client_therapist row, it freaks out. So I guess my question is - how do I get around this? I need to update the therapist_id on a certain row in the client_therapist table, but it seems I can't as long as there is a row in the client_group table. Here are my tables with some dummy info: CREATE SCHEMA IF NOT EXISTS `test_structure` DEFAULT CHARACTER SET utf8 ; USE `test_structure` ; -- ----------------------------------------------------- -- Table `test_structure`.`user` -- ----------------------------------------------------- CREATE TABLE IF NOT EXISTS `test_structure`.`user` ( `user_id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT , `email` VARCHAR(80) CHARACTER SET 'utf8' COLLATE 'utf8_unicode_ci' NOT NULL , `password` VARCHAR(40) CHARACTER SET 'ut
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recreate the schema on my little project's database: ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails When I encountered this before, I ended up dropping the entire database, recreating it, and then restoring the schema. But that seems a bit, well, rude. Turns out you can temporarily disable foreign key checks: SET FOREIGN_KEY_CHECKS=0; Just be sure to restore them once you're done messing around: SET FOREIGN_KEY_CHECKS=1; Did you like this article? Share it with your friends! Tweet Leave a Reply Cancel reply You must be logged in to post a comment. Anything in here will be replaced on browsers that support the canvas element oracle databaseproxy tools programming networkingproxytoolsMacbookProAnti-PatternswordpressthemebloggingHumorScreen ScrapingTime Other Stuff I Wrote Activate TiVo's 30 second skip easter egg Adding Google AdSense to your HTML pages Meta Log in Entries RSS Comments RSS WordPress.org © 2016 bigmarv.net Powered by Pinboard Theme and WordPress