Unknown column 'f_data231.f13141' in 'where clause'

function process_multiple_selection($post_field_name, $list, $table_field) {
global $query;
global $criteria;
$values = get_post($post_field_name);
if (is_array($values) & count($values) > 0) {
  $query = "$query AND (";
  foreach ($values as $vi) {
    $v = $list[(int) $vi];
    if (isset($v))
      $query = "$query($table_field = '$v') OR";
    }
  $query = substr($query, 0, -3) . ')';
  $criteria++;
  }
}
if ($_POST['sklads_flag']) process_multiple_selection('sklads', $sklads_list, "$orders_table.`f13141`");

с чем может быть связана ошибка " Unknown column 'f_data231.f13141' in 'where clause' "