select * from xgxt_iwh.school_classes where chmod_status ='1' and data_status ='1' update xgxt_iwh.school_classes class_name = #{className}, major_id = #{majorId}, t_id = #{tId}, class_code = #{classCode}, write_time = #{writeTime}, read_time = #{readTime}, data_status = #{dataStatus}, chmod_status = #{chmodStatus}, where id = #{id}