Discuz! Database Error

(0) It is not safe to do this query

SELECT t.*,p.pid,f.name,NULL AS id,NULL AS idtype,i.extra FROM (SELECT tid FROM forum_thread WHERE fid NOT IN (1000) AND displayorder>=0 ORDER BY displayorder DESC,lastpost DESC LIMIT 30870,15) pg JOIN forum_thread t ON t.tid=pg.tid JOIN forum_post p ON p.tid=t.tid AND p.first=1 JOIN forum_forum f ON f.fid=t.fid AND f.status=1 LEFT JOIN forum_forumfield i ON i.fid=t.fid ORDER BY t.displayorder DESC,t.lastpost DESC

PHP Debug

No.	File	Line	Code
1	portal.php	32	require_once(%s)
2	source/module/portal/portal_index.php	32	include_once(%s)
3	data/template/2_diy_portal_index.tpl.php	49	include(%s)
4	template/dingzhi_2021_zhihu/php/extend_index.php	81	discuz_database::query(%s)
5	source/class/discuz/discuz_database.php	140	discuz_database::checkquery(%s)
6	source/class/discuz/discuz_database.php	177	discuz_database_safecheck::checkquery(%s)
7	source/class/discuz/discuz_database.php	368	break()

ask.tvsbook.com 已经将此出错信息详细记录, 由此给您带来的访问不便我们深感歉意.