ช่วยดูคำสั่่่ง DELETE ข้อมูล แล้วให้ตัวเลขลดลงหน่อยค่ะ

<?php
require_once ('connect.php');
connect() ;

$sql = "SELECT  stockmaster.* , branchstock.BranchName FROM stockmaster"; 
$sql =$sql  . " INNER JOIN branchstock ON stockmaster.BranchId = branchstock.Id ";
$sql =$sql .   "where stockmaster.Id= " . $_GET["Id"]; 
$BrnrecordSet = mysql_query($sql, $objConnect) or die(mysql_error());     

?>
<div align="center">
<form name="form1" method="post" action="EditDetail.php">
<?php
while ($Row = mysql_fetch_array($BrnrecordSet))
{
	$BrnName = $Row["BranchName"];
	$ProductCode = $Row["ProductCode"];
	$SerialNo = $Row["SerialNo"];
	$Spec = $Row["Spec"];
	$ActualQTY = $Row["ActualQTY"];
	$Status = $Row["Status"];
	$StatusDate = $Row["StatusDate"];
	
}
?> 
<table>
    <tr>
    	<td >สาขา:</td>
      <td>
        <input type="hidden"  name = "Id"  value="<?php echo $_GET["Id"]; ?>" />
        <input type="text" name="BranchName"  value="<?php echo $BrnName; ?>"> </td>
         </tr>
      <tr>
    	<td width="36%" align="right" valign="top">รุ่นรถ:</td>
        <td width="64%">
         <input type="text" name="ProductCode" value="<?php echo $ProductCode; ?>">
          </td>
    </tr> 
    <tr>
    	<td width="36%" align="right" valign="top">SerialNo:</td>
        <td width="64%">
         <input type="text" name="SerialNo" value="<?php echo $SerialNo; ?>">
          </td>
    </tr> 
    <tr>
    	<td width="36%" align="right" valign="top">รายละเอียด:</td>
        <td width="64%">
         <input type="text" name="Spec" value="<?php echo $Spec; ?>">
          </td>
    </tr> 
     <tr>
    	<td width="36%" align="right" valign="top">จำนวน:</td>
        <td width="64%">
         <input type="text" name="ActualQTY" value="<?php echo $ActualQTY; ?>">
          </td>
    </tr> 
    <tr>
    	<td width="36%" align="right" valign="top">สถานะ:</td>
        <td width="64%">
         <input type="text" name="Status" value="<?php echo $Status; ?>">
          </td>
    </tr> 
    <tr>
    	<td width="36%" align="right" valign="top">วันที่สาขารับมอบ:</td>
        <td width="64%">
         <input type="text" name="StatusDate" value="<?php echo $StatusDate; ?>">
          </td>
    </tr> 
     <tr>
    	<td width="36%" align="right" valign="top"></td>
        <td width="64%">
        <input type="submit" name="submit" value="บันทึก">
        <button name="BtnBack" onclick="location.href = ''stockplanlist.php"> กลับ</button>
          </td>
    </tr>   	
      	</td>
        </tr>
</table> 
</div>
</form> 

$sql = "DELETE FROM stockmaster WHERE Id";
$result = mysql_query($sql, $objConnect) or die(mysql_error());

$ProdCodeS = $_POST["ProductCode"] . "_Act";
$sql = "DELETE branchstock SET " . $ProdCodeS . "";
$sql = $sql . " WHERE Id=" . $_POST["Id"];
$result = mysql_query($sql, $objConnect) or die(mysql_error());


$result = mysql_query($sql, $objConnect) or die(mysql_error());

if ($result)
{
	echo '<script language="javascript">javascript:alert("save complete");</script>';
	header("location:stockactuallist.php");
	
}