DALPlaceHolderChange.php

<?php
// Old code.
$result = db_query("SELECT nid FROM {node} n WHERE n.type = '%s' AND n.status = %d", array('page', 1));

// DBTNG. Note that multiple 
$result = db_query("SELECT nid FROM {node} n WHERE n.type = :type AND n.status = :status", array(
  ':type' => 'page',
  ':status' => 1,
));
?>