[มือใหม่]มีปัญหาเรื่องการลบข้อมูลในฐานข้อมูลครับ ขอคำแนะนำ

	$sql_del = "delete from list_stu where add_stu = '$del_id';";
	mysql_query($sql_del) or die(mysql_error());

	$sql_del = "delete from list_stu where add_stu = '$del_id';";
	mysql_query($sql_del) or die(mysql_error());

<?
  	$host="localhost";
	$username="root";
	$pass_word="1234";
	$db="register"; 
	$Conn = mysql_connect( $host,$username,$pass_word) or die ("ติดต่อฐานข้อมูลไม่ได้");
	mysql_query("SET NAMES utf8",$Conn);
	mysql_select_db($db) or die("เลือกฐานข้อมูลไม่ได้");
	if($_REQUEST['del_id'] != "")
	{
	$del_id = $_REQUEST['del_id'];
	$sql_del = "delete from list_stu where add_stu = '$del_id';";
	mysql_query($sql_del) or die(mysql_error());
       $sql_del = "delete from list_stu where name_ge = '****$ตรงนี้*****';";
	mysql_query($sql_del) or die(mysql_error());
	echo "ลบข้อมูล ID $del_id เรียบร้อยแล้ว";
	}
?>

<a href="admin_astu.php?del_id=<?=$row_show['no_ge']?>&del_name=<?=$row_show['name_ge']?>

$sql_del = "delete from list_stu where add_stu = '".$_GET['del_id'] ."' and name_ge='".$_GET['del_name'] ."';";