Oracle加入两个查询并得出明显答案

Question

我需要帮助将两个表链接在一起以根据需要恢复数据。 我有两个查询： 第一个如下：

SELECT 
     POI.PO_ID as PO_ID, SUM(POI.INV_QTY) AS INV_QTY, POI.INV_NUMBER, 
     PO.SUP_SUP_ID AS SUPPLIER 

    FROM TABLE1 POI, PUR_ORDS PO 
    WHERE POI.PO_ID = '56886' AND POI.PO_ID = PO.PO_ID 
    GROUP BY POI.PO_ID, POI.INV_NUMBER, PO.SUP_SUP_ID 
    ORDER BY POI.INV_NUMBER ASC 

这个查询的结果如下：

PO_ID|INV_QTY|INV_NUMBER|SUPPLIER 
--------------------------------- 
56886| 105|INV1  |SUP1 
56886| 106|INV2  |SUP1 

我有第二个查询是这样的：

SELECT 
     DIL.PO_PO_ID, sum(DIL.ACPTD_QTY) as ACPTD_QTY, 
     DIL.DLVD_DLVY_NUMB AS DEL_NUM 
    FROM TABLE2 DIL 
    where DIL.PO_PO_ID = '56886' 
    GROUP BY PO_PO_ID, DIL.DLVD_DLVY_NUMB 
    order by del_num 

该查询结果如下：

PO_PO_ID|ACPTD_QTY|DEL_NUM 
-------------------------- 
    56886|  105|  1 
    56886|  106|  2 

现在我试图加入的两个表，但我得到多个值出现，使用下列内容：

SELECT DISTINCT(PO_ID), INV_NUMBER, INV_QTY, SUPPLIER, ACPTD_QTY, DEL_NUM 
FROM 
(SELECT 
      SELECT POI.PO_ID as PO_ID, SUM(POI.INV_QTY) AS INV_QTY, 
       POI.INV_NUMBER, PO.SUP_SUP_ID AS SUPPLIER 
      FROM TABLE1 POI, PUR_ORDS PO 
      WHERE POI.PO_ID = '56886' 
      AND POI.PO_ID = PO.PO_ID 
      GROUP BY POI.PO_ID, POI.INV_NUMBER, PO.SUP_SUP_ID 
      ORDER BY POI.INV_NUMBER ASC) POINET 
INNER JOIN 
(SELECT DIL.PO_PO_ID, sum(DIL.ACPTD_QTY) as ACPTD_QTY, 
       DIL.DLVD_DLVY_NUMB AS DEL_NUM 
      FROM TABLE 2 DIL 
      where DIL.PO_PO_ID = '56886' 
      GROUP BY PO_PO_ID, DIL.DLVD_DLVY_NUMB 
      order by DEL_NUM) DILV 

      ON DILV.PO_PO_ID = POINET.PO_ID 
      GROUP BY PO_ID, INV_NUMBER, INV_QTY, SUPPLIER, ACPTD_QTY, DEL_NUM 
      ORDER BY INV_NUMBER 

但是我得到的数据集是这样的：

PO_ID|INV_NUMBER |INV_QTY|SUPPLIER|ACPTD_QTY|DEL_NUM 
----------------------------------------------------- 
56886|K-101/2014-15| 105|SUP1 |  105|  1 
56886|K-101/2014-15| 105|SUP1 |  106|  2 
56886|K-107/2014-15| 106|SUP1 |  105|  1 
56886|K-107/2014-15| 106|SUP1 |  106|  2 

但是我需要它显示以下内容：

PO_ID|INV_NUMBER |INV_QTY|SUPPLIER|ACPTD_QTY|DEL_NUM 
------------------------------------------------------ 
56886|K-101/2014-15| 105|SUP1 |  105|  1 
56886|K-107/2014-15| 106|SUP1 |  106|  2 

我需要做些什么来调整我的查询？ 任何帮助将不胜感激。

Answer 1

我想你只需要修改你的连接语句加入对两列

ON DILV.PO_PO_ID = POINET.PO_ID 
AND DILV.INV_QTY = POINET.ACPTD_QTY 

其实，你可能可以离开了PO_ID，因为我这是相同的两个子查询：

即只要做到这一点（在第三行）：

ON DILV.INV_QTY = POINET.ACPTD_QTY