yuexiamen.com - Database Error

(1064) 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 '=557 ORDER BY lastpost desc LIMIT 3' at line 1

SELECT t.* FROM yxm_mdd_didian_note_map m left join forum_thread t using(tid) left join yxm_mdd_didian d using(ddid) WHERE t.`fid`='2' AND t.`displayorder` IN('0','1','2','3','4') AND d.=557 ORDER BY lastpost desc LIMIT 3

PHP Debug

No.	File	Line	Code
1	mudidi.php	65	require_once(%s)
2	sourcenew/module/mudidi/mudidi_diqu.php	40	table_yxm_mdd_didian_note_map->fetch_all_note_by_dqsql(%s)
3	sourcenew/class/table/table_yxm_mdd_didian_note_map.php	77	discuz_database::fetch_all(%s)
4	sourcenew/class/discuz/discuz_database.php	99	discuz_database::query(%s, Array, false, false)
5	sourcenew/class/discuz/discuz_database.php	135	db_driver_mysql->query(%s, false, false)
6	sourcenew/class/db/db_driver_mysql.php	153	db_driver_mysql->halt(%s, %d, %s)
7	sourcenew/class/db/db_driver_mysql.php	224	break()

Discuz! Database Error