Kohana 3 cross-table update using Query builder

What is the proper way to construct a cross-table update in Kohana 3 using the DB query builder? Currently I am just using a DB::expr but I know the query builder is smarter than that. // update record $rows_updated = DB::update(DB::expr('user_list_permissions INNER JOIN users ON user_list_permissions.user_id = users.id')) ->set($params) ->where('user_list_permissions.id', '=', $user_list_permissi

[wakuworks]

UPDATE 文で JOIN を使用する方法。FuelPHP でも使用可能