เกี่ยวกับ swicth ซ้อน swicth รบกวนด้วยครับ..... Error!!!

<?
$sql_dss = "	select	*
					from 		house h, facility f, public p
					where 	h.HouseID = p.HouseID 
					and 		h.HouseID = f.HouseID  ";
				
switch($_REQUEST['Price'])
{
case 0 : switch($_REQUEST['Bedroom']
			{
			case 0 : $sql_dss.= " 	and h.Price is Null and h.Zone is Null"; break;
			case 1 : $sql_dss.= " 	and h.Price is Null and h.Zone like 'บ%' "; break;
			case 2 : $sql_dss.= " 	and h.Price is Null and h.Zone like 'ศ%' "; break;														
			} 
case 1 : $sql_dss.= " and h.Price < 2000000 "; break;
case 2 : $sql_dss.= " and h.Price between 2000000 and 5000000   "; break;
case 5 : $sql_dss.= " and h.Price >5000000 "; break;
}


$result_dss = mysql_query($sql_dss) or die ( mysql_error()) ;	
$arr_dss =	 mysql_fetch_array($result_dss);
print_r ($arr_dss); 			
 ?>