count ordered assn w/ postgres

Postgres is much stricter than Mysql and barfs if a sql statement has both select count() and an order clause. Unfortunately, if a count_by_sql isn't provided for an association governed by a find_by_sql with an order clause, ActiveRecord will substitute the select clause with count() and neglect to drop the order clause.

We patched our Rails to drop the order clause (by finding the last occurrence of order by). Maybe there's some other reason why this is a bad idea (some SQL code that gets broken by this).

Mostly just making yall aware of the issue...