資料庫無法連結

MySQL 語法：
select a.name as class2_name,b.name as class1_name,c.name as factory_name,c.pic as fpic from class2 as a join class1 as b on (a.class1_no=b.no) join factory as c on(a.factory_no=c.no) where a.class1_no=1 and a.no=

MySQL 錯誤訊息：