def self.up
add_index :changesets, [:user_id, :id], :name => "changesets_user_id_id_idx"
remove_index :changesets, :name => "changesets_user_id_idx"
def self.up
add_index :changesets, [:user_id, :id], :name => "changesets_user_id_id_idx"
remove_index :changesets, :name => "changesets_user_id_idx"