for($i = 0; $i <= $age_loop; $i++) {
    $start_age = $i * 10;
    $where = $base_where . " AND order_birth >= cast('$start_date' as date) -interval '$start_age year'";
    if($i < $age_loop) {
        $end_age = $start_age+9;
        $where = $where . " AND order_birth < cast('$end_date' as date) -interval '$start_age year'";
    }else{
        $where = $base_where . " AND order_birth < cast('$end_date' as date) -interval '$start_age year'";
        $end_age = 999;
    }
    lfBatOrderAgeSub($sql . $where, $start, $end, $start_age, $end_age, 1);
}