Changing Admin/Orders.php sort order

[Rachael w.]

I would like to change the sort order of the orders to have the most recent modified date at the top of the list. I want to have orders which have been modified or created sorted by most recent. 

Example:

 

Order Created 11/13/13 (today)

Order Modified 11/12/13
Order Modified 11/10/13

Order Created 11/05/13 (last week)

Order Modified 11/02/13 

 

I've tried editing this:

<?php
    if (isset($HTTP_GET_VARS['cID'])) {
      $cID = tep_db_prepare_input($HTTP_GET_VARS['cID']);
      $orders_query_raw = "select o.orders_id, o.customers_name, o.payment_method, o.date_purchased, o.last_modified, o.currency, o.currency_value, s.orders_status_name, ot.text as order_total from " . TABLE_ORDERS . " o left join " . TABLE_ORDERS_TOTAL . " ot on (o.orders_id = ot.orders_id), " . TABLE_ORDERS_STATUS . " s where o.customers_id = '" . (int)$cID . "' and o.orders_status = s.orders_status_id and s.language_id = '" . (int)$languages_id . "' and ot.class = 'ot_total' order by orders_id DESC";
    } elseif (isset($HTTP_GET_VARS['status']) && is_numeric($HTTP_GET_VARS['status']) && ($HTTP_GET_VARS['status'] > 0)) {
      $status = tep_db_prepare_input($HTTP_GET_VARS['status']);
      $orders_query_raw = "select o.orders_id, o.customers_name, o.payment_method, o.date_purchased, o.last_modified, o.currency, o.currency_value, s.orders_status_name, ot.text as order_total from " . TABLE_ORDERS . " o left join " . TABLE_ORDERS_TOTAL . " ot on (o.orders_id = ot.orders_id), " . TABLE_ORDERS_STATUS . " s where o.orders_status = s.orders_status_id and s.language_id = '" . (int)$languages_id . "' and s.orders_status_id = '" . (int)$status . "' and ot.class = 'ot_total' order by o.orders_id DESC";
} else {
      // ### BEGIN ORDER MAKER ### added customer_service_id
      $orders_query_raw = "select o.orders_id, o.customers_name, o.payment_method, o.date_purchased, o.last_modified, o.currency, o.currency_value, o.customer_service_id, s.orders_status_name, ot.text as order_total from " . TABLE_ORDERS . " o left join " . TABLE_ORDERS_TOTAL . " ot on (o.orders_id = ot.orders_id), " . TABLE_ORDERS_STATUS . " s where o.orders_status = s.orders_status_id and s.language_id = '" . (int)$languages_id . "' and ot.class = 'ot_total' order by o.orders_id DESC";
      // ### END ORDER MAKER ### added customer_service_id
    }    $orders_split = new splitPageResults($HTTP_GET_VARS['page'], MAX_DISPLAY_SEARCH_RESULTS, $orders_query_raw, $orders_query_numrows);
    $orders_query = tep_db_query($orders_query_raw);
    while ($orders = tep_db_fetch_array($orders_query)) {
    if ((!isset($HTTP_GET_VARS['oID']) || (isset($HTTP_GET_VARS['oID']) && ($HTTP_GET_VARS['oID'] == $orders['orders_id']))) && !isset($oInfo)) {
        $oInfo = new objectInfo($orders);
      }

      if (isset($oInfo) && is_object($oInfo) && ($orders['orders_id'] == $oInfo->orders_id)) {
        echo '              <tr id="defaultSelected" class="dataTableRowSelected" onmouseover="rowOverEffect(this)" onmouseout="rowOutEffect(this)" onclick="document.location.href=\'' . tep_href_link(FILENAME_ORDERS, tep_get_all_get_params(array('oID', 'action')) . 'oID=' . $oInfo->orders_id . '&action=edit') . '\'">' . "\n";
      } else {
        echo '              <tr class="dataTableRow" onmouseover="rowOverEffect(this)" onmouseout="rowOutEffect(this)" onclick="document.location.href=\'' . tep_href_link(FILENAME_ORDERS, tep_get_all_get_params(array('oID')) . 'oID=' . $orders['orders_id']) . '\'">' . "\n";
      }
?> 

I've changed all "order by o.orders_id DESC" to last_modified and it kind of works but there are orders that have not been modified that are not being sorted. It seems that the orders which have been created but not modified are showing throughout the results rather than being sorted. 

What can I do to have the orders with no modification also sorted in the list based on the date?

[oscMarket]

.................order by o.orders_id, o.last_modified DESC";

 

[Rachael w.]

That did work, but I guess it's more complicated. I only want to see payment received (customers&status=2) and payment pending (customers&status=1) this way. I can live with it as is but this would help me a great deal.