Error 1217 Mysql
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company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss mysql error 1217 drop table Join the Stack 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 how to solve this- Cannot delete or update a parent row: a foreign key constraint fails up vote 0 down mysql errno 150 vote favorite I'm trying to drop table and I'm getting this error : Cannot delete or update a parent row: a foreign key constraint fails Some could help me please : the statement : DROP TABLE vehiculo the error : #1217 - Cannot delete or update a parent row: a foreign key constraint fails the tables that have a relationship with vehiculo: CREATE TABLE `vehiculo` ( `numero_movil` int(3) unsigned NOT NULL, `numeroChasis` varchar(30) COLLATE utf8_spanish2_ci NOT NULL, `numeroMotor` varchar(30) COLLATE utf8_spanish2_ci NOT NULL, `Marca` varchar(15) COLLATE utf8_spanish2_ci NOT NULL, `Modelo` smallint(5) unsigned NOT NULL, `Color` varchar(10) COLLATE utf8_spanish2_ci NOT NULL, `Propietario_Cedula` int(11) NOT NULL, `Cuota` int(11) NOT NULL, `Turno_idTurno` tinyint(3) unsigned NOT NULL, `estado_pago_central` int(11) NOT NULL, `DocumentoVehiculo` int(10) unsigned NOT NULL, `f_numero_movil` int(10) unsigned NOT NULL, `f_Propietario_Cedula` int(11) NOT NULL, `idEstadoPapelesVehiculo` tinyint(3) unsigned NOT NULL, `placa` varchar(8) COLLATE utf8_spanish2_ci NOT NULL, PRIMARY KEY (`numero_movil`,`Propietario_Cedula`,`Turno_idTurno`,`estado_pago_central`,`DocumentoVehiculo`,`f_numero_movil`,`f_Propietario_Cedula`,`idEstadoPapele
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Mysql Error Code 1217
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Cannot Update A Parent Row: A Foreign Key Constraint Fails
a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Can't drop table: A foreign key constraint fails up vote 22 down vote favorite http://stackoverflow.com/questions/15203742/how-to-solve-this-cannot-delete-or-update-a-parent-row-a-foreign-key-constrain 8 In MySQL I want to drop a table. I tried a lot things but I keep getting the error that the table named bericht can't be dropped. This is the error I'm getting: #1217 - Cannot delete or update a parent row: a foreign key constraint fails How do I drop this table? mysql sql drop-table share|improve this question edited Mar 21 '13 at 10:06 CloudyMarble 23.7k1566110 asked Jun http://stackoverflow.com/questions/11100911/cant-drop-table-a-foreign-key-constraint-fails 19 '12 at 12:26 roy 116114 2 Find out what other table is referencing it via foreign key, and first drop the FK constraint on that table, then drop this table. –Michael Berkowski Jun 19 '12 at 12:27 You need to remove the requirement by other tables on the one you dont want any more –BugFinder Jun 19 '12 at 12:27 1 Do any of these answers help you? stackoverflow.com/questions/1905470/… stackoverflow.com/questions/3334619/… –Douglas Ludlow Jun 19 '12 at 12:35 add a comment| 3 Answers 3 active oldest votes up vote 35 down vote This should do the trick: SET FOREIGN_KEY_CHECKS=0; DROP TABLE bericht; SET FOREIGN_KEY_CHECKS=1; As others point out, this is almost never what you want, even though it's whats asked in the question. A more safe solution is to delete the tables depending on bericht before deleting bericht. See CloudyMarble answer on how to do that. I use bash and the method in my post to drop all tables in a database when I don't want to or can't delete and recreate the database itself. The #1217 error happens when other tables has foreign key constraints to the table you are trying to delete and you are using the InnoDB database engine. This solution tempo
2013 6:33 Reporter: Justin Swanhart Email Updates: Status: Verified Impact on me: None Category:MySQL Server: https://bugs.mysql.com/bug.php?id=70531 DDL Severity:S1 (Critical) Version:5.5.32,5.5.34, 5.6.14, 5.7.2 OS:Any (5.5.32-ubuntu) Assigned to: Tags: constraints, DDL, innodb View Add Comment Files Developer Edit Submission View Progress Log Contributions [5 Oct http://dba.stackexchange.com/questions/71479/converting-to-myisam-foreign-key-checks-0-not-working 2013 11:08] Justin Swanhart Description: When attempting to drop a database populated with data, InnoDB fails to drop one of the tables with an FK error. mysql error It is not possible to drop the database without turning off FK checks. An orphaned table with constraints that can not be satisfied remains in the schema. I consider this corruption as the table can not be dropped without setting foreign_key_checks=0 and inconsistent data is now in the database (children without parents). update a parent How to repeat: I haven't narrowed down an exact case yet, and I can't give you the table structures of all the tables as they are private. Here are reproduce steps though and a sanitized version of the table that is orphaned. mysql> select count(*) from information_schema.tables where table_schema='XXX'; +----------+ | count(*) | +----------+ | 17 | +----------+ 1 row in set (0.00 sec) mysql> drop database XXX; ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails mysql> select count(*) from information_schema.tables where table_schema='XXX'; +----------+ | count(*) | +----------+ | 1 | +----------+ 1 row in set (0.00 sec) mysql> drop database XXX; ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails mysql> use XXX; Database changed mysql> show tables; +---------------+ | Tables_in_pct | +---------------+ | XXXXXX | +---------------+ 1 row in set (0.00 sec) mysql> show create table XXXXXX\G *************************** 1. row *******************
log in tour help Tour Start 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 Database Administrators Questions Tags Users Badges Unanswered Ask Question _ Database Administrators Stack Exchange is a question and answer site for database professionals who wish to improve their database skills and learn from others in the community. Join them; it only takes a minute: Sign up Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top Converting to MyISAM, `foreign_key_checks = 0` Not Working up vote 0 down vote favorite At the end of a long series of compromises working in a system I didn't design, own, or maintain, I need to convert a number of MySQL InnoDB tables to MyISAM tables. However, when I attempt to alter the table mysql> ALTER TABLE catalog_category_entity ENGINE=MyISAM; ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails mysql> MySQL complains. This is expected. However, if I disable the foreign_key_checks, I get the same results mysql> SET foreign_key_checks = 0; mysql> ALTER TABLE catalog_category_entity ENGINE=MyISAM; ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails This happens regardless of my setting the key check at the global or session level. I assume the problem here is the table in questions has other InnoDB table which reference it, and MySQL refuses to end up in a state where an InnoDB table references a table that's not InnoDB. (I may be incorrect on this, and I'm more than happy to be corrected) Is there a quick way to handle this situation? I basically want all tables in the database to be MyISAM, and tracing out all the relationships myself and/or manually remo