db error: nice page will be here

DB Error: syntax error

SELECT 
                a.url_app_id, 
                a.url_app_parent_id, 
                a.name,
                p.lang_id,
                p.path, 
                p.https,
				a.description, a.image
            FROM 
 	            url_app a,
                url_path p
            WHERE
                a.url_app_id = p.url_app_id
                AND p.lang_id = 'robots.txt'
                AND a.app_type = 1 AND 
                a.url_app_parent_id =  ORDER BY corder [nativecode=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 'ORDER BY corder' at line 16]