Created by Jerry Wang, last modified on Sep 08, 2014

scenario: 在ERP d2 is removed from d1.

 

 

 

 

 

 

 

The logic is handled here:

 

 

 

根据时间降序排序:

 

ps_equz就包含了ERP latest的parent 信息:

 

将D2重新assign给D4之后，也能反映出来: