select a.pay_classify_detail_id, a.pay_classify_id, a.coupon_id, a.give_num, a.create_time from pay_classify_detail a where a.pay_classify_id = #{payClassifyId} order by a.pay_classify_detail_id desc update pay_classify_detail set coupon_id=null,give_num=null where pay_classify_detail_id=#{payClassifyDetailId}