I creat this form which contain dynamic table:

<form action="<?php echo $editFormAction;?>" method="post" name="form1">
<table cellspacing="0">
  <tr>
    <th>#</th>
    <th>ORDER DESC</th>
    <th>ORDERING DEPT</th>
    <th>ORDERING SERVICE</th>
    <th>STATUS</th>
    <th>SENDING DATE</th>
    <th>DELIVERING NO</th>
    <th>DELIVERING DATE</th>
    <th>COMMENT</th>
  </tr>
  <?php do { ?>
    <tr>
      <td><?php echo $row_medi['order_no']; ?></td>
      <td><?php echo $row_medi['ORDER_DESC']; ?></td>
      <td><?php echo $row_medi['ORDERING_DEPT']; ?></td>
      <td><?php echo $row_medi['ORDERING_SERVICE']; ?></td>
      <td><select name="mydropdown"><option value="Undelivered">Undelivered</option><option value="Delivered">Delivered</option></select></td>
      <td><?php $sqldate=date('d-m-Y',strtotime($row_medi['SENDING_DATE']));
	  			echo $sqldate; ?></td>
      <td><?php echo $row_medi['DELIVERING_NO']; ?></td>
      <td><?php $sqldate=date('d-m-Y',strtotime($row_medi['DELIVERING_DATE']));
	  			echo $sqldate; ?></td>
      <td><?php echo $row_medi['COMMENT']; ?></td>
    </tr>
    <?php } while ($row_medi = mysql_fetch_assoc($medi)); ?>
</table>
<input type="submit" value="Save" />
<input type="hidden" name="MM_insert" value="form1">
</form>

as you see in this table there is a dropdown menu I want to update the record with selected value and I'm using this code:

$editFormAction = $_SERVER['PHP_SELF'];
if ((isset($_GET["MM_insert"])) && ($_GET["MM_insert"] == "form1")) {
	$choice = mysql_real_escape_string($_REQUEST['mydropdown']);
	$insertSQL = "UPDATE orders SET STATUS = $choice";
mysql_select_db($database_PPS, $PPS);
  $Result1 = mysql_query($insertSQL, $PPS) or die(mysql_error());

  $insertGoTo = "Pharmacy.php?a=$pat_id";
  if (isset($_SERVER['QUERY_STRING'])) {
    $insertGoTo .= (strpos($insertGoTo, '?')) ? "&" : "?";
    $insertGoTo .= $_SERVER['QUERY_STRING'];
  }
  header(sprintf("Location: %s", $insertGoTo));
}

and this the code that retrieve the data (No Error in this code):

mysql_select_db($database_PPS, $PPS);
$query_medi = "SELECT order_no, ORDER_TYPE, ORDER_DESC, ORDERING_DEPT, ORDERING_SERVICE, SENDING_DATE, DELIVERING_NO, DELIVERING_DATE, PRODUCT_CODE, MEDICINE_DOSES, STATUS, URGENCY_CODE, MEASUREMENT_UNIT, MEDICINE_ROUTE, COMMENT, pat_id FROM orders WHERE orders.pat_id=$pat_id AND orders.ORDER_TYPE='MED'";
$medi = mysql_query($query_medi, $PPS) or die(mysql_error());
$row_medi = mysql_fetch_assoc($medi);
$totalRows_medi = mysql_num_rows($medi);

when I rendering this page it displays the dynamic table fine but when selecting a value from any dropdown list then clicking save it gives this error msg: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND orders.ORDER_TYPE='MED'' at line 1 any help ??

the problem is from $pat_id in the last part of the code $query_medi (i.e. line 2). is all your code in one file?

yes the code in one file. I tried warping around pat_id with '' and the error disappear but the selected record doesn't updated ???

You have problem in updation or showing data from tables after updation using joins??
Instead of this:-

$insertSQL = "UPDATE orders SET STATUS = $choice";

Check this:-

$insertSQL = "UPDATE orders SET STATUS = '$choice'";

Same problem :( no error msg and no update performed !!!!

Remeber that your form is a Post and no a Get, as such line 2 of the second parcel of your code should be;

if ((isset($_POST["MM_insert"])) && ($_POST["MM_insert"] == "form1")) {

it's really good and i got good infomation thanks and keep it up....