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Foreign key problem

Foreign key problem

livium	18 Jun, 2009 - 05:41 AM Post #1
D.I.C Regular Joined: 21 Dec, 2008 Posts: 294 My Contributions	I'm trying to set a foreign key to a table by using the alter command (in wamp) in this way: CODE ALTER TABLE projects ADD FOREIGN KEY (id_project) REFERENCES users_projects(id_project); And i get this error #1005 - "Can't create table 'free_code.#sql-45c_250' (errno: 150)" The id_project form table projects is a primary key and it is autoincremented. The field id_project from users_projects has the same definition (it is indexed) with the difference that it is not autoincremented. Both tables are InnoDB. Where i'm I going wrong? I don't understand what is the problem. Thanks!
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ellisgl	RE: Foreign Key Problem 22 Jun, 2009 - 01:57 PM Post #2
D.I.C Head Joined: 10 Nov, 2007 Posts: 118 Thanked: 3 times Dream Kudos: 25 My Contributions	A couple things could be wrong: 1.) Make sure the types match 2.) Make sure that a key/pk doesn't exist with the same name. 3.) And make sure you are linking to a key
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