set_global_curr_code($_POST['curr_abrev']);
-$sql = "SELECT date_, rate_buy, id FROM "
- .TB_PREF."exchange_rates "
- ."WHERE curr_code=".db_escape($_POST['curr_abrev'])."
- ORDER BY date_ DESC";
+$sql = get_sql_for_exchange_rates();
$cols = array(
_("Date to Use From") => 'date',