Someone

		$budget_node = sfDoctrine::connection()->query("
			  SELECT SUM(t.points), o.* 
			  FROM Orgnode o, o.transactions t
			  WHERE o.id = ? AND t.created_at >= ? AND t.type = 'issue'
			  GROUP BY o.id",
			  array(
			  			$this->getId(),
			  			$budget->getStartDate()
			  		)  
			)->getFirst()->SUM;