Cannot drop index needed in a foreign key
WebWith foreign_key_checks=0, dropping an index required by a foreign key constraint places the table in an inconsistent state and causes the foreign key check that occurs at … WebAug 1, 2014 · the reason why you cannot drop InstructorID is because you need to use the name of the constraint of the Foreign key . KevDev specified that you must run 'SHOW CREATE TABLE course' to find the constraint name. after doing so , you can delete the foreign key. BUT wait theres more, the 'key' still stays behind which must get deleted.
Cannot drop index needed in a foreign key
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WebApr 14, 2024 · To fix this issue, if you would like to drop an index, you need to drop associated foreign keys first and their indexes and once you drop target index you need to add back foreign keys. ALTER TABLE `sampledb`.`merchant_product` DROP FOREIGN KEY `fk_mp_phone_id`, DROP FOREIGN KEY `fk_mp_merchent_id`, DROP FOREIGN … WebJul 18, 2016 · Django 1.9 drop foreign key in migration. I want to keep the underlying DB column as a field, but to get rid of the foreign key constraint in the database. class Example (models.Model): something_id = models.IntegerField () And, to be clear, something_id is the column that Django had created for the foreign key field.
WebSep 29, 2012 · possible duplicate of MySQL Cannot drop index needed in a foreign key constraint – Kariem Apr 22, 2014 at 14:19 Add a comment 1 Answer Sorted by: 19 Remove foreign key constrain first and then drop index. Otherwise you will always get error. alter table Image_Question drop foreign key key_name_here Share Improve this answer … Web1 Answer Sorted by: 2 In SQL, in general, a foreign key constraint can refer to either a primary key or a unique key. MySQL extends this to any indexed column (s), but that is not relevant here. Somewhere in your data model, you have a foreign key reference using these two keys instead of id.
WebMar 17, 2014 · ALTER TABLE moveMembers DROP fkAccessId; {quote} When I use --force to execute it I get the following error: {quote} [Doctrine\DBAL\DBALException] An … WebApr 9, 2013 · It's interesting that mysqlindexcheck reported that index as being a "redundant index". I tried to drop it but I got the following error: "ERROR 1553 (HY000): Cannot drop index 'index_name': needed in a foreign key constraint". So, it's not possible to drop that index and keep the foreign key. –
WebWith foreign_key_checks=0, dropping an index required by a foreign key constraint places the table in an inconsistent state and causes the foreign key check that occurs at table load to fail. To avoid this problem, remove the foreign key constraint before dropping the index (Bug #70260). IMHO you should drop FOREIGN KEY before DROP the …
WebSep 21, 2024 · Cannot drop index {index_name}: needed in a foreign key constraint Ask Question Asked 4 years, 6 months ago Modified 4 years, 6 months ago Viewed 2k times 0 I want to drop an index, but I can't because is used in another table, but I can't find where ALTER TABLE t_course DROP INDEX user_id Is there a way to know where it is used ? … fishers furniture logan utahWebMar 13, 2024 · 1 you need to drop the name of the index, ALTER TABLE acct_doc_item_data DROP FOREIGN KEY ;, you cannot use the column name when dropping foreign key, only when dropping the column. – Napoli Mar 13, 2024 at 7:10 fishers furniture stores logan utahWebJun 8, 2024 · Seems that the FK needs some form of index to function. When creating the unique index, the FK's own index is taken over by the unique one, so that when the unique index is dropped later, the FK would remain "index-less". To prevent that from happening, seems like it is enough to add a normal index before deleting the unique: can am x3 cooler mountsWeb2 days ago · ** SQLSTATE[HY000]: General error: 1553 Cannot drop index 'transaction_id': needed in a foreign key . Stack Overflow. About; Products For Teams; Stack Overflow Public questions & answers; ... How to drop a composite key which includes a foreign key in laravel 5.2 migration. 3 General error: 1215 Cannot add foreign key … fishers funeral home lafayetteWebApr 29, 2024 · MariaDB Cannot Drop Index Needed in a Foreign Key Constraint ; MariaDB Drop Unique Index; Bijay. I am Bijay having more than 15 years of experience in the Software Industry. During this time, I have worked on MariaDB and used it in a lot of projects. Most of our readers are from the United States, Canada, United Kingdom, … can am x3 control armsWebMay 8, 2024 · When creating a foreign key, the database checks if an index exists. If not an index will be created. By default, it will have the same name as the constraint. When … can am x3 delrin a arm bushing kitWebTour Comece aqui para obter uma visão geral rápida do site Central de ajuda Respostas detalhadas a qualquer pergunta que você tiver Meta Discutir o funcionamento e ... can am x3 drag race