If data bulk is very great, can reserve base expresses backup, reshipment hind undertakes extracting, (professional personage ability undertakes this, discreet) can reduce a few workload.

• 假如数据量很大，可以吧库存基础表备份，重装后进行提取，（这个是专业人士才能进行的，慎重）可以减少一些工作量。