在Oracle中获取重复记录

Question

我有 3 张桌子：order、order_transaction 和 order_history。

在order 中，仅保存一个订单条目以及order_id。 在order_history 中，我保存了该订单上发生的所有事务，例如orderAccepted、orderInProgress（这是该订单上的事件）。 在order_transaction 中保存了所有与交易相关的详细信息。两个表中的transaction_id 即order_transaction 和order_history 保持不变。

content of tables are 
order
    id
    created by
    created_date
    client type
    type 
    qty 
    price

order_history
    id
    order_id
    transaction_id
    events
    created_date

order_transaction
    id
    order_id
    transaction_id
    qty
    price
    status

有一个事件，客户可以恢复名为orderProccessedReverted 的订单，但这不是一次性完成的。例如，如果有一个 1000 数量的订单，然后它被还原，它将被分成 10 个不同的条目，其中 order_id 将保持不变，但交易将发生变化，并且此条目将同时出现在 order_transaction 和 order_history表格。

两个表中的条目示例如下：

order_history
id  order_id  transaction_id  events                        created_date  
001  1111       345           orderProccessedReverted       20-08-19
002  1111       346           orderProccessedReverted       20-08-19
003  1111       347           orderProccessedReverted       20-08-19


order_transaction
id  order_id  transaction_id    qty     created_date  
011  1111       345             100      20-08-19
012  1111       346             100      20-08-19
013  1111       347             100      20-08-19

现在我正在生成一份报告，我需要在其中恢复所有订单。以下是报告栏：

order_id   created_by   client_type  transaction_id   qty    status          events                     created_date
111         user1           type1       444           100    reverted       orderProccessedReverted         20-08-19
111         user1           type1       445           100    reverted       orderProccessedReverted         20-08-19
111         user1           type1       446           100    reverted       orderProccessedReverted         20-08-19
111         user1           type1       447           100    reverted       orderProccessedReverted         20-08-19
112         user2           type2       551           50     reverted       orderProccessedReverted         20-08-19
112         user2           type2       552           50     reverted       orderProccessedReverted         20-08-19
112         user2           type2       553           50     reverted       orderProccessedReverted         20-08-19

我尝试了左连接和普通连接，但我得到了重复的记录。

我尝试了以下查询：

select * from
order_history orderHist,
order_transaction  tr,
order ord
where
ord.id = tr.order_id
AND  tr.order_id = orderhist.order_id
AND tr.transaction_id = orderhist.transaction_id 
AND orderhist.event= 'orderProccessedReverted'
AND tr.status = 'REVERTED'
AND ord.tradedate='20190820';

Answer 1

试试这个，我用虚拟数据和几列创建，你可以在选择中添加更多列。

WITH ord AS ( SELECT '001' AS id,
       '111' AS order_id
FROM dual ), ord_his AS ( ( SELECT '001' AS id,
       '111' AS order_id,
       '456' AS transaction_id,
       'Reverted' AS events
FROM dual
) UNION ( SELECT '002' AS id,
       '111' AS order_id,
       '457' AS transaction_id,
       'Reverted' AS events
FROM dual
) ), ord_tran AS ( ( SELECT '001' AS id,
       '111' AS order_id,
       '456' AS transaction_id,
       100 AS qnty
FROM dual
) UNION ( SELECT '002' AS id,
       '111' AS order_id,
       '457' AS transaction_id,
       100 AS qnty
FROM dual
) ) SELECT ord.*,
       ord_his.transaction_id,
       events,
       qnty
FROM ord,
     ord_his,
     ord_tran
WHERE ord.order_id = ord_his.order_id AND ord_his.transaction_id = ord_tran.transaction_id;