SELECT  a.teacher_id , a.user_id , a.name , a.kind ,b.class_id , b.staff   FROM xx_es_timetable_teacher a   LEFT JOIN xx_e_classteacher b  On a.user_id = b.uid  where  a.hide='0'   order  by a.name  <br>Table 'wljh_www.xx_e_classteacher' doesn't exist