How To Solve Error 150 In Mysql

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Mysql Errno 150 Can't Create Table

us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow errno 150 mysql foreign key 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 MySql mysql error 1005 Error 150 - Foreign keys up vote 13 down vote favorite 2 When I execute the follow two queries (I have stripped them down to absolutely necessary): mysql> CREATE TABLE foo(id INT PRIMARY KEY); Query OK, 0 rows affected (0.01 sec) mysql>

Mysql Can't Create Table Errno 150 Foreign Key

CREATE TABLE bar ( id INT, ref INT, FOREIGN KEY (ref) REFERENCES foo(id)) ENGINE InnoDB; I get the following error: ERROR 1005 (HY000): Can't create table './test/bar.frm' (errno: 150) Where the **** is my error? I haven't found him while staring at this for half an hour. mysql mysql-error-1005 share|improve this question edited Apr 30 '11 at 17:18 OMG Ponies 199k37356416 asked May 5 '09 at 15:14 Martin Thurau 4,73842561 add a comment| 7 Answers 7 active oldest votes up vote 25 down vote

Error 121 In Mysql

accepted From FOREIGN KEY Constraints If you re-create a table that was dropped, it must have a definition that conforms to the foreign key constraints referencing it. It must have the right column names and types, and it must have indexes on the referenced keys, as stated earlier. If these are not satisfied, MySQL returns error number 1005 and refers to error 150 in the error message. My suspicion is that it's because you didn't create foo as InnoDB, as everything else looks OK. Edit: from the same page - Both tables must be InnoDB tables and they must not be TEMPORARY tables. share|improve this answer answered May 5 '09 at 15:22 Greg 198k35306302 A bit of quick testing, creating a foo as above with MyISAM, and a bar with InnoDB, suggests that that's the case - try double-checking your table type for foo. –Rob May 5 '09 at 15:26 +1 for "Both tables must be InnoDB tables", thanks a lot! –sanbhat Mar 4 '13 at 11:00 1 Even when both tables were InnoDB, I still had the same problem. I fixed it by created the index on the referred table before creating the foreign key. –iroegbu Sep 4 '13 at 17:29 yes. it should be innoDB. Thanks a lot –MAA Feb 20 '14 at 7:01 It doesn't help that MySQL Workbench 6.3 seems to randomly change the engine type to MyISAM from InnoDB when I'm creating new tables. –Chris Peacock yesterday add

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Error 150 In Mysql Alter Table

company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users error 1005 (hy000) Badges Ask Question x Dismiss 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 http://stackoverflow.com/questions/825362/mysql-error-150-foreign-keys a minute: Sign up MySQL: Creating table with FK error (errno 150) up vote 16 down vote favorite 4 I've created a model with MySQL Workbench and am now attempting to install it to a mysql server. Using File > Export > Forward Engineer SQL CREATE Script... it outputs a nice big file for me, with all the settings I ask for. http://stackoverflow.com/questions/1085001/mysql-creating-table-with-fk-error-errno-150 I switch over to MySQL GUI Tools (the Query Browser specifically) and load up this script (note that I'm going form one official MySQL tool to another). However, when I try to actually execute this file, I get the same error over and over SQLSTATE[HY000]: General error: 1005 Can't create table './srs_dev/location.frm' (errno: 150) "OK", I say to myself, something is wrong with the location table. So I check out the definition in the output file. SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0; SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0; SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='TRADITIONAL'; -- ----------------------------------------------------- -- Table `state` -- ----------------------------------------------------- DROP TABLE IF EXISTS `state` ; CREATE TABLE IF NOT EXISTS `state` ( `state_id` INT NOT NULL AUTO_INCREMENT , `iso_3166_2_code` VARCHAR(2) NOT NULL , `name` VARCHAR(60) NOT NULL , PRIMARY KEY (`state_id`) ) ENGINE = InnoDB; -- ----------------------------------------------------- -- Table `brand` -- ----------------------------------------------------- DROP TABLE IF EXISTS `brand` ; CREATE TABLE IF NOT EXISTS `brand` ( `brand_id` INT UNSIGNED NOT NULL AUTO_INCREMENT , `name` VARCHAR(45) NOT NULL , `domain` VARCHAR(45) NOT NULL , `manager_name` VARCHAR(100) NULL , `manager_email` VARCHAR(255) NULL , PRIMARY KEY (`brand_id`) ) ENGINE = InnoDB; -- ---------------------

SQL Insertion Learn how web applications with access to your database (e.g. MySQL) may be used to poison, dump, or delete information in your database. MySQL Foreign Keys Learn all about MySQL foreign keys in this white paper. MySQL Foreign Key Errors and Errno: 150 Learn how to avoid MySQL foreign http://www.eliacom.com/mysql-gui-wp-errno-150.php key errors, including the notorious Errno:150 in this white paper. MySQL/SQL Data Validation (with PHP) Learn the importance of data validation in web applications when information is accepted from third parties, or even from internal users. MySQL Foreign Key Errors: errno 150, errno 121, and others Diagnosing Errors SHOW ENGINE INNODB STATUS is Your New Best Friend: Click for solutionIf you get one of the really helpful errors (sarcasm) like the errno 150 or errno 121, then by simply typing in SHOW ENGINE in mysql INNODB STATUS, there is a section called "LATEST FOREIGN KEY ERROR". Under that it will give you a very helpful error message, which typically will tell you right away what is the matter. What's the catch?You need SUPER privileges to run it, so if you don't have that, you'll just have to test out the following scenarios. Use Eliacom's MySQL GUI tool to catch most errors: Click for solutionYou can either download the MySQL GUI to install on your own server, or you can can't create table use our free online demo of the MySQL GUI to do it. You can check out our video on how to create foreign keys and indexes using Eliacom's MySQL GUI tool.. MySQL errno 150 ERROR 1005 (HY000): Can't create table 'table' (errno: 150) ERROR 1025 (HY000): Error on rename of 'table' to 'newtable' (errno: 150) Causes and Solutions for errno 150 Data Types Don't Match: Click for solutionThe types of the columns have to be the same (usually). This is one of the most common reasons for errno 150. For instance, if the type of the child column is VARCHAR(50), the type of the parent column should be exactly VARCHAR(50) (since they're supposed to hold the same data). For numeric types, if one is UNSIGNED, then both have to be UNSIGNED. They should match exactly!. I have run into circumstances where it has let me create a foreign key where the child column was a VARCHAR(50) and the parent column was a VARCHAR(200). Interestingly, if I tried to do the opposite for the same tables, reference a child column that was a VARCHAR(200) to a parent column that was a VARCHAR(50), it threw the errno 150 error. This all might depend on the version of MySQL you are using, and really, the data types should match exactly since the same data is being stored in both places. How do you fix it? You need to check the data types for the columns. You can check them by using SHO