ดูโค้ดให้หน่อยค่ะ พอเวลากด Delete แล้ว มันไม่ยอมลบ ในฐานข้อมูลอ่าค่ะ

$sql = "Delete from news where FilesName =".$FilesName;
echo $sql;exit;   // ตรวจสอบว่า syntax ถูกต้องหรือเปล่า และลองนำ string ที่แสดงไป query ใน phpmyadmin นะครับ
mysql_query($sql);

if ($FilesName != ''){
$sql = "Delete from news where FilesName ='".$FilesName."'";
mysql_query($sql);

$query =mysql_query("Delete from news where FilesName ='".$_POST['$FilesName']."' ");

$sql = "SELECT * FROM `pic`";

$sql = "SELECT * FROM files";

$sql = "Delete from news where FilesName =".$FilesName;

$sql = "Delete from pic where FilesName ='".$FilesName"'";

  <?
		
	include("ConnectNews.php");
		$FilesName = $_POST['FilesName'];
if ($FilesName != ''){
$sql = "Delete from pic where FilesName ='".$FilesName"'";
mysql_query($sql);
}
			mysql_query ("SET NAMES utf8") or die (mysql_errno());
		$sql = "SELECT * FROM `pic`";
		$result = mysql_query($sql);
		$totalPrice=0;
		echo"<table width='50%' border='1' bordercolor='#fff'  bgcolor='#34B2C9' ><tr align='center'><td><b>ชื่อรูปภาพ</b></td>
		<td><b>ลบรูป</td>
						<b></b>
				</td></tr>";
		while($row=mysql_fetch_array($result)){
			$FilesName = $row["FilesName"];
			echo "<tr bgcolor='#C6EAF0' align='center'><form id='form1' name='form1' method='post' action='PageMultiUploadToMySQL4.php'>";
			echo "<td>$FilesName<input name='FilesName' type='hidden' value='$FilesName'></td>";
			echo "<td><input type='submit' name='Delete' id='Delete'  value='Delete' onclick=" ?>"return confirm('คุณแน่ใจว่าต้องการลบข้อมูลนี้หรือไม่ ? ')" /><? "/>";
			echo "</td></form></tr>";
		}
		echo "</table>";
?>