嗯，没有这条Key的定义的时候，页面有Warning
Warning: mysql_fetch_array(): supplied argument is not a valid MySQL result
resource in /home/bbs/kbs_bbs/bbs2www/html/pc/pcstat.php on line 327

直接找相应sql语句在mysql里查询
mysql> SELECT nodes.uid , nid , subject
    -> FROM nodes use index(visitcount) ,users
    -> WHERE access = 0
    -> AND nodes.uid = users.uid
    -> AND nodetype = 0
    -> AND pctype < 4
    -> GROUP BY uid
    -> ORDER BY nodes.visitcount DESC
    -> LIMIT 0 ,10;
会出现错误提示
ERROR 1072: Key column 'visitcount' doesn't exist in table

加上这条定义就没事了，hehe...-_-
【 在 dvlt (饿了就要吃！) 的大作中提到: 】
: 应该不搭界啊。
--
FROM 221.192.220.*