간단한 SQL 문법 좀 봐주세요.

<?php
   $point_sql = "SELECT DISTINCT t1.mb_id, t1.mb_point, t1.mb_nick, t1.mb_level, COUNT(t1.mb_id) AS ranking
   FROM {$g5['member_table']} t1, {$g5['member_table']} t2
   WHERE (t1.mb_point < t2.mb_point
   OR t1.mb_id = t2.mb_id)
   GROUP BY t1.mb_id
   ORDER BY ranking
   LIMIT 0 , 1";
   $point_que = sql_query($point_sql);
   while($point_row = sql_fetch_array($point_que)){
    $tmp_member = sql_fetch("select mb_id, mb_nick, mb_email, mb_homepage from {$g5['member_table']} where mb_id = '".$point_row['mb_id']."'");
    $tmp_sideview = get_sideview($tmp_member['mb_id'], cut_str($tmp_member['mb_nick'], $config['cf_cut_name']), $tmp_member['mb_email'], $tmp_member['mb_homepage']);
   ?>
    <span style="line-height:1.8em"> <?=level_icon($point_row['mb_id'])?> </span><?=$tmp_sideview?>
    <span style="color:#000">(<?=number_format($point_row['mb_point'])?>)</span> 님 포인트 1등입니다.
  <? } ?>