mysql-error-1452

Why 'foreign key constraint fails' when foreign key exists?

由 心不动则不痛 提交于 2019-12-30 18:25:50
问题 I have a simple query UPDATE `t_timecard_detail` SET `timeoff_request_id` = 'adad8e0d-c22b-41c3-a460-6cf982729299' WHERE `id` = 'cfc7a0a1-4e03-46a4-af89-069a0661cf55'; which gives this error ERROR 1452 (23000): Cannot add or update a child row: a foreign key constraint fails (`demo1_timeapp`.`t_timecard_detail`, CONSTRAINT `timeoff_request_id_refs_id_48fe5c4` FOREIGN KEY (`timeoff_request_id`) REFERENCES `t_timeoff_request` (`id`)) constraint is CONSTRAINT `timeoff_request_id_refs_id_48fe5c4`

MySQL Error Code 1452 Foreign Key Constraint

由 你说的曾经没有我的故事 提交于 2019-12-17 21:31:32
问题 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 PHONE_PK PRIMARY KEY(NameID) ); But

Mysql error 1452 - Cannot add or update a child row: a foreign key constraint fails

由 妖精的绣舞 提交于 2019-12-16 19:32:25
问题 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 am trying to reference. 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

ERROR 1452 : Cannot add or update a child row: a foreign key constraint fails

由 ℡╲_俬逩灬. 提交于 2019-12-13 03:04:00
问题 Help me please! I am having this error. Error: Cannot add or update a child row: a foreign key constraint fails (world.alarmes, CONSTRAINT fk_alarmes_registos1 FOREIGN KEY (idRegisto) REFERENCES registos (idRegisto) ON DELETE NO ACTION ON UPDATE NO ACTION) I have these tables. CREATE TABLE `registos` ( `data_registo` char(10) NOT NULL, `hora_registo` time NOT NULL, `idSensor` varchar(8) NOT NULL, `Temperatura` char(6) DEFAULT NULL, `Humidade` char(6) DEFAULT NULL, `pt_orvalho` char(6) DEFAULT

MySQL - Cannot add or update a child row: a foreign key constraint fails

由 ε祈祈猫儿з 提交于 2019-12-12 07:25:01
问题 This seems to be a common error, but for the life of me I can't figure this out. I have a set of InnoDB user tables in MySQL that are tied together via foreign key; the parent user table, and a set of child tables that store email addresses, actions, etc. These are all tied to the parent user table by a foreign key, uid , with all of the parent and child keys being int(10) . All of the child tables have a uid value with a foreign key constraint pointing to user.uid , and set to ON DELETE

Getting ERROR 1701, ERROR 1452 and ERROR 1305 errors in MySQL - Need some expertise

由 谁说我不能喝 提交于 2019-12-07 12:30:00
问题 This is my first real crack at making a database in Third Normal Form. I managed to create the DDL script ok (I had the logical model verified to 3NF before I went ahead and built the script) but I get a whole lot of errors I am unsure of fixing. I may have bitten more than I can chew for this particular case but I don't want to give up - it's a big learning curve for me and with some help I can get past this and move on. First of all, here is my DDL script: -- This sql script creates the

Getting ERROR 1701, ERROR 1452 and ERROR 1305 errors in MySQL - Need some expertise

由 。_饼干妹妹 提交于 2019-12-06 03:49:34
This is my first real crack at making a database in Third Normal Form. I managed to create the DDL script ok (I had the logical model verified to 3NF before I went ahead and built the script) but I get a whole lot of errors I am unsure of fixing. I may have bitten more than I can chew for this particular case but I don't want to give up - it's a big learning curve for me and with some help I can get past this and move on. First of all, here is my DDL script: -- This sql script creates the structure. -- of the rugby club database. DROP DATABASE IF EXISTS database_rugby; CREATE DATABASE database

Why 'foreign key constraint fails' when foreign key exists?

由 岁酱吖の 提交于 2019-12-01 16:56:52
I have a simple query UPDATE `t_timecard_detail` SET `timeoff_request_id` = 'adad8e0d-c22b-41c3-a460-6cf982729299' WHERE `id` = 'cfc7a0a1-4e03-46a4-af89-069a0661cf55'; which gives this error ERROR 1452 (23000): Cannot add or update a child row: a foreign key constraint fails (`demo1_timeapp`.`t_timecard_detail`, CONSTRAINT `timeoff_request_id_refs_id_48fe5c4` FOREIGN KEY (`timeoff_request_id`) REFERENCES `t_timeoff_request` (`id`)) constraint is CONSTRAINT `timeoff_request_id_refs_id_48fe5c4` FOREIGN KEY (`timeoff_request_id`) REFERENCES `t_timeoff_request` (`id`) though the ID 'adad8e0d-c22b

Handling database integrity

由 末鹿安然 提交于 2019-12-01 16:37:40
问题 I'm introducing database integrity using innodb constraints in the next version of my application. Everything goes well, but some of my tables have records with deleted references (dead records) and because of them I can't add constraints to the table. I am trying: ALTER TABLE `article` ADD FOREIGN KEY (`author_id`) REFERENCES `authors` (`id`) ON DELETE CASCADE; And I get: #1452 - Cannot add or update a child row: a foreign key constraint fails (`books`.<result 2 when explaining filename '

Handling database integrity

由 隐身守侯 提交于 2019-12-01 16:29:35
I'm introducing database integrity using innodb constraints in the next version of my application. Everything goes well, but some of my tables have records with deleted references (dead records) and because of them I can't add constraints to the table. I am trying: ALTER TABLE `article` ADD FOREIGN KEY (`author_id`) REFERENCES `authors` (`id`) ON DELETE CASCADE; And I get: #1452 - Cannot add or update a child row: a foreign key constraint fails (`books`.<result 2 when explaining filename '#sql-442_dc'>, CONSTRAINT `#sql-442_dc_ibfk_1` FOREIGN KEY (`author_id`) REFERENCES `authors` (`id`) ON
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