UnionOfRAD/lithium — pull request #538 by jails (2012-06-13 19:56:39+00:00)
Title: Fix #530.

Change the actual `GROUP BY` strategy for recovering unique primary keys with has many relation(s). The MySQL `GROUP BY` clause is not conventional and can't be applied with the PostgreSQL adapter for recovering unique primary keys with an `ORDER BY` query using the same syntax.