想要使用android和sqlite将一对多的记录作为单行显示

Question

我有三张桌子：

orderMaster：

orderNo | status |contactId
--------+--------+---------
100     |Pending |1
200     |Pending |2
300     |Pending |3

orderShirtPant：

orderNo | ShirtorPant |Quantity
--------+-------------+--------
100     |Shirt        |2
100     |Pant         |3
200     |Shirt        |1
200     |Pant         |3
300     |Shirt        |2

联系人：

contactId | Name
----------+-----------
1         | Mahesh
2         | Anil
3         | Ramesh

想要输出如下：

Name    |orderNo| orderDetails 
--------+-------+-------------
Mahesh  |100    |2 Shirt, 3 Pant    
Anil    |200    |1 Shirt, 3 Pant    
Ramesh  |300    |2 Shirt    

Answer 1

请使用以下查询获取结果

select Name,group_concat(Quantity ||' '|| orderShirtPant.ShirtorPant),orderShirtPant.orderNo from contacts,orderShirtPant,orderMaster where contacts.contactId =orderMaster.contactId and orderMaster.orderNo =orderShirtPant.orderNo group by Name;