On 12 Sty, 22:53, David Nolen <dnolen.li...@gmail.com> wrote: > When migrating an existing db how do you create a proper join table > for a ManyToMany field. I think I've got it mostly worked out except > for the bit that looks like this in Django generated SQL: > > CREATE TABLE `blog_posts_authors` ( > `id` int(11) NOT NULL AUTO_INCREMENT, > `post_id` int(11) NOT NULL, > `user_id` int(11) NOT NULL, > PRIMARY KEY (`id`), > UNIQUE KEY `post_id` (`post_id`,`user_id`), > KEY `user_id_refs_id_ea0040bf` (`user_id`) /* <========= GENERATED ? > */ > ) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=latin1 > > Django creates some kind of random key, If I generate a random key in > my own join table will Django automatically use this? >
KEY is just INDEX, and AFAIK Django doesn't refer to indices anyway, they are used internally by MySQL, to speed up queries. By the way, South.aeracode.org is a great library for performing migrations, it takes care of such low-level details. -- Tomasz Zielinski http://pyconsultant.eu
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