Column order in generated SQL is based on relationships, instead of SELECT clause

When executing below query as follows:
$q = Doctrine_Query::create()
->select('bc.id, bbl.printed_name, bbl.rate, bc.name, bc.is_rate_variable')
->from('BillBatchLine bbl, bbl.Bill_Charge bc')
->where('bbl.bill_batch_id = ?', $bill_batch_id);
return $q->execute(array(), Doctrine::HYDRATE_NONE);

SQL generated is:
SELECT b.printed_name AS b_printed_name, b.rate AS brate, b2.id AS b2id, b2.name AS b2name, b2.is_rate_variable AS b2_is_rate_variable FROM Bill_Batch_Lines b LEFT JOIN bill_charges b2 ON b.bill_charge_id = b2.id AND (b2.deleted_at IS NULL) WHERE (b.bill_batch_id = '2' AND b.society_id = '1' AND b2.society_id = '1' AND (b.deleted_at IS NULL))

Basically, columns are ordered based on relationships and not as defined in the SELECT clause