id_, name_, serial_num_, describe_, client_type_, category_, use_limit_, discount_price_, coupon_type_, valid_day_, start_time_, end_time_, inventory_, quantity_limit_, status_, updated_by_, update_time_, created_by_, created_time_ update coupon_info set inventory_ = inventory_ + #{size} - #{size} and inventory_ - #{size} >= 0 and id_ = #{couponId}