drnic/composite_primary_keys — pull request #138 by dinshaw (2012-12-11 20:42:35+00:00)
Title: Failing test and fix around sort order for mysql, sqlite, and pg

There was another submission for this bug by tom (https://github.com/drnic/composite_primary_keys/pull/133) , but this one uses the existing classes, instead of adding new ones, and covers mysql, sqlite, and pg. Not able to run the other dbs atm, sorry.