$result = SQL_QUERY('SELECT `id` FROM `{?_MYSQL_PREFIX?}_refsystem` WHERE `level`=0', __FILE__, __LINE__);
if (!SQL_HASZERONUMS($result)) {
// Remove index temporaly
$result = SQL_QUERY('SELECT `id` FROM `{?_MYSQL_PREFIX?}_refsystem` WHERE `level`=0', __FILE__, __LINE__);
if (!SQL_HASZERONUMS($result)) {
// Remove index temporaly