SQL ERROR!!

SQL USED : SELECT topic_items.title_tag,topic_items.meta_key,topic_items.meta_description,topic_items.id,topic_items.title,topic_items_id,last_item_desc.id as desc_id FROM topic_items JOIN (SELECT * FROM topic_items_desc WHERE id IN (SELECT MAX(id) FROM topic_items_desc where suspend=0 GROUP BY topic_items_id)) AS last_item_desc ON topic_items.id = last_item_desc.topic_items_id where topic_items.topic_sub_cat_unit_id= and topic_items.suspend=0 ORDER BY topic_items_id @ course-item-landing.php line 12
SQL RESPONCE : 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 topic_items.suspend=0 ORDER BY topic_items_id' at line 1This site is under maintance , we will be up and running soon.