mysql query for getting all messages that belong to user's contacts

Posted by aharon on Stack Overflow See other posts from Stack Overflow or by aharon
Published on 2010-06-13T03:37:32Z Indexed on 2010/06/13 3:42 UTC
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mysql-query

So I have a database that is setup sort of like this (simplified, and in terms of the tables, all are InnoDBs):

Users:    contains based user authentication information (uid, username, encrypted password, et cetera)
Contacts: contains two rows per relationship that exists between users as
          (uid1, uid2), (uid2, uid1) to allow for a good 1:1 relationship
          (must be mutual) between users
Messages: has messages that consist of a blob, owner-id, message-id (auto_increment)

So my question is, what's the best MySQL query to get all messages that belong to all the contacts of a specific user? Is there an efficient way to do this?

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