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Mysql Can't Create Table Errno 150 Foreign Key

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Errno 150 Mysql Foreign Key

helping each other. Join them; it only takes a minute: Sign up MySQL Foreign Key, Can't create table (errno: 150) up vote 7 down vote favorite 2 I am trying to build the database and tables for my can t create table errno 121 system. But I found that if I don't add the foreign key in the codes. There is no error. I've used many method try to make the codes works, but it still have error. I am using MySQL 5.5.31, and the codes here: CREATE DATABASE TOS; DROP TABLE TOS.USER CASCADE; DROP TABLE TOS.BILL_HEADER CASCADE; DROP TABLE TOS.TOY CASCADE; CREATE TABLE TOS.USER (User Char(8), Name Char(10), Type Char(1), Password Char(12), PRIMARY KEY(User)); CREATE TABLE TOS.BILL_HEADER (Bill_No Char(10), CTime error on rename of (errno 150) DateTime, No_Of INTEGER, Cus_No Char(5), DTime DateTime, PRIMARY KEY(Bill_No)); CREATE TABLE TOS.TOY (Toy_Id Char(10), FullN Char(50), ShortN Char(20), Descrip Char(20), Price DECIMAL, Avail Char(1), Cat Char(1), PRIMARY KEY(Toy_Id)); CREATE TABLE TOS.BILL_ITEM (Bill_No Char(10), BSeq_No INTEGER, Toy_Id Char(10), OTime DateTime, Quan INT, DCondition Char(1), PRIMARY KEY(Bill_No,BSeq_No), FOREIGN KEY(Bill_No) REFERENCES TOS.Bill_Header(Bill_No), FOREIGN KEY(Toy_Id) REFERENCES TOS.TOY(Toy_Id)); Error: 1005 - Can't create table 'TOS.BILL_ITEM' (errno: 150) Any help would be greatly appreciated. mysql foreign-keys mysql-error-1005 share|improve this question asked Nov 23 '13 at 19:06 Confucius 1043310 It does appear to work if I remove the DROP statements.. sqlfiddle.com/#!2/08d1e –Michael Berkowski Nov 23 '13 at 19:10 2 Usually, err 150 is a foreign key error, due to a data type and length mismatch between the column and relation, or a missing index on the primary column. You do have all the correct types and PK indexes defined though. –Michael Berkowski Nov 23 '13 at 19:12 Could you try to remove only one of the foreign keys to narrow the problem? –Oscar Pérez Nov 23 '13 at 19:14 add a comment| 2 Answers 2 active oldest votes up vote 14 down vote accepted The non-descript error 150 is usually related to foreign key data type or length mismatches, or a missing index on the parent table's column. This look s to be a matter of case sensitivity i

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us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, http://stackoverflow.com/questions/20166573/mysql-foreign-key-cant-create-table-errno-150 just like you, helping each other. Join them; it only takes a minute: Sign up MySQL ERROR 1005: Can't create table (errno: 150) up vote 6 down vote favorite I am trying to create the following table create table messaInScena ( data date, ora time, spazio varchar(20), spettacolo varchar(40), postiDisponibili smallint, prezzoIntero decimal(5,2), prezzoRidotto decimal(5,2), prezzoStudenti http://stackoverflow.com/questions/17812616/mysql-error-1005-cant-create-table-errno-150 decimal(5,2), primary key (data, ora, spazio), foreign key (spazio) references spazio(nome) on update cascade on delete set null, foreign key (spettacolo) references spettacolo(titolo) on update cascade on delete set null, constraint RA3_1 check (postiDisponibili >= 0) ) ; but I get the following error: Error Code: 1005 Can not create table 'teatrosql.messainscena' (errno: 150) The tables that are referenced by foreign keys are: create table spazio ( nome varchar(20) primary key, indirizzo varchar(40) not null, pianta varchar(20), capienza smallint ); create table spettacolo ( titolo varchar(40) primary key, descrizione LONGBLOB, annoProduzione char(4) ); I have already verified that the fk are unique and that there are no typos (but given a control also you that you never know :D). As you can see the reference fields are primary keys. between fields and fk reference types and dimensions coincide .. where am I wrong?? the the other tables of DB create table teatro ( nome varchar(20) primary key, telefono varchar(15), fax varchar(15), indirizzo varchar(40) not null, e

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. http://www.eliacom.com/mysql-gui-wp-errno-150.php MySQL Foreign Key Errors and Errno: 150 Learn how to avoid MySQL foreign key errors, http://dba.stackexchange.com/questions/5437/mysql-foreign-key-cant-create-table-error-150 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 create table solutionIf you get one of the really helpful errors (sarcasm) like the errno 150 or errno 121, then by simply typing in SHOW ENGINE 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 t create table 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 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, refere

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 MySQL, foreign key, can't create table error 150 up vote 5 down vote favorite 1 UPDATE: Sorry, it was because i forgot to add UNSIGNED attribute to the lang_id column. Original: I'm trying to create a table with foreign key in MySQL. I get this error: #1005 - Can't create table 'xy.trans' (errno: 150) Any ideas whats wrong with the following create statement? CREATE TABLE IF NOT EXISTS `lang` ( `id` INT UNSIGNED NOT NULL AUTO_INCREMENT, `code` CHAR(2) NOT NULL, PRIMARY KEY (`id`) ) ENGINE = InnoDB; CREATE TABLE IF NOT EXISTS `trans` ( `id` INT UNSIGNED NOT NULL AUTO_INCREMENT, `something` TEXT NOT NULL, `lang_id` INT NULL, PRIMARY KEY (`id`), INDEX `index_trans_lang` (`lang_id` ASC), CONSTRAINT `fk_trans_lang` FOREIGN KEY (`lang_id` ) REFERENCES `lang` (`id` ) ON DELETE SET NULL ON UPDATE CASCADE ) ENGINE = InnoDB; mysql foreign-key share|improve this question edited Jan 14 '13 at 12:07 Akash 512318 asked Sep 6 '11 at 10:39 Ben 2613 Ah, +1 for solving your own problem !!! –RolandoMySQLDBA Sep 6 '11 at 15:00 3 @Ben, if you would be so kind as to post your answer as an answer proper, and mark it accepted, you'll get upvotes (higher rep) and it'll be more clear what transpired here. –jcolebrand♦ Sep 6 '11 at 18:08 add a comment| 2 Answers 2 active oldest votes up vote 1 down vote I've had a similar problem with this, and I finally resolved it by checking the field types of the two fields that were being referenced - they have to be exactly the same type - all the way down to the "Not NUll" and "Unsigned" settings... In your original post, the "lang" table has the "id" field defined as "INT UNSIGNED NOT NULL", whereas the "trans" table has the "lang_id" field defined as "INT NULL"... share|improve this answer answered Sep 20

 

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