ช่วยดู code SELECT SUM(dueamt) AS total_amt FROM t_contract_due หน่อยว่าแสดงที่ละ ID ได้ไหมครับ

<?
    $objConnect = mysql_connect("localhost","cad_account","cad_admin") or die("Error Connect to Database");
    $objDB = mysql_select_db("aggcobcad");
    $sql = "SELECT SUM(dueamt) AS total_amt FROM t_contract_due  
			WHERE isstatus='W'
			AND CURRENT_DATE()>dueymd";
	$result=mysql_query($sql) or die(mysql_error());
    while($row = mysql_fetch_array($result)){
	echo "&nbsp;จำนวนมียอดค้างชำระ  ". $row['total_amt'] ."&nbsp;บาท ";
	echo "<br />";
	}
?>