WordPress database error: [You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND post_index = OR topic_id = AND post_index=1 ORDER BY post_id DESC' at line 6]
SELECT post_id, topic_id, forum_id, post_date, UNIX_TIMESTAMP(post_date) as udate, guest_name, wp_sfposts.user_id, post_index, post_status, user_login, wp_sfmembers.display_name FROM wp_sfposts LEFT JOIN wp_users ON wp_sfposts.user_id = wp_users.ID LEFT JOIN wp_sfmembers ON wp_sfposts.user_id = wp_sfmembers.user_id WHERE topic_id = AND post_index = OR topic_id = AND post_index=1 ORDER BY post_id DESC;
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在Firefox下没有，在IE下有。
这是访问插件Simple Forum（现已改名为Simple Press Forum）首页出现的问题。
似乎是数据库变量的问题。

[ 本帖最后由 kyan 于 2008-8-11 12:17 编辑 ]

貌似是语法错误

你的SQL版本是多少？

http://www.stuff.yellowswordfish ... /page-1/post-12287/

问题解决了，我在找原因。
谢谢回应。

[You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND post_index = OR topic_id = AND post_index=1 ORDER BY post_id DESC' at line 6]

检查一下post_index  topic_id 字段是否可以为空

呵呵，不用改。
问题是修改了帖子的SLUG造成了。
我把那个帖子删除了就没有问题了。
然后，我再把这个论坛插件所在的文件夹的权限改成777。

多谢回应。