Discuz! 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 '=0 and d.typeid=2 group by m.classid' at line 1
SELECT m.classid FROM yxm_mdd_didian d right join yxm_mdd_didian_class_map m using(ddid) WHERE d.=0 and d.typeid=2 group by m.classid

PHP Debug

No.FileLineCode
1mudidi.php63require_once(%s)
2sourcenew/module/mudidi/mudidi_poi.php185table_yxm_mdd_didian_class_map->fetch_all_by_dqid_typeid(%s, %d)
3sourcenew/class/table/table_yxm_mdd_didian_class_map.php38discuz_database::fetch_all(%s)
4sourcenew/class/discuz/discuz_database.php99discuz_database::query(%s, Array, false, false)
5sourcenew/class/discuz/discuz_database.php135db_driver_mysql->query(%s, false, false)
6sourcenew/class/db/db_driver_mysql.php153db_driver_mysql->halt(%s, %d, %s)
7sourcenew/class/db/db_driver_mysql.php224break()
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