@Select("select DISTINCT(edu_class_code) as `code`,b_edu_class.class_name as className from b_sl_schedule LEFT JOIN b_edu_class on edu_class_code = b_edu_class.`code` \n"+
"where sub_agency_id = #{2} and b_edu_class.flag = \"1\" and b_edu_class.del_flag = \"0\" ORDER BY edu_class_code")