Discuz! Database Error

(0) It is not safe to do this query
SELECT DISTINCT t.* FROM `forum_thread` t FORCE INDEX(`index_4`) /*edit by Axpwx*/ WHERE t.tid > 2286043 AND t.readperm='0' AND t.special IN ('0') AND t.isgroup='0' AND t.displayorder>='0' ORDER BY t.lastpost DESC LIMIT 0,10;

PHP Debug

No.FileLineCode
1portal.php32require_once(%s)
2source/module/portal/portal_index.php32include_once(%s)
3data/template/1_diy_portal_index.tpl.php5include(%s)
4data/template/1_1_common_footer.tpl.php126output()
5source/function/function_core.php1036block_updatecache(%s)
6source/function/function_block.php237block_thread->getdata(Array, Array)
7source/class/block/forum/block_thread.php372discuz_database::query(%s)
8source/class/discuz/discuz_database.php137discuz_database::checkquery(%s)
9source/class/discuz/discuz_database.php174discuz_database_safecheck::checkquery(%s)
10source/class/discuz/discuz_database.php365break()
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