No discussion yet...

DE-MC-136 每笔订单有多条商品记录,订单金额只在订单表存一份。要按客户汇总订单金额,正确的连接设计是?

Information

ID
577
Time
ms
Memory
MiB
Difficulty
8
Tags
# Submissions
0
Accepted
0
Uploaded By

Discussion Nodes