Oracle Join Two Queries With Distinct Answer - oracle

Question

I need help in linking two tables together to bring back data as I need.
I have two queries:
The first is as follows:
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
The Results of this query are as follows:
PO_ID|INV_QTY|INV_NUMBER|SUPPLIER
---------------------------------
56886| 105|INV1 |SUP1
56886| 106|INV2 |SUP1
The second query I have is this:
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
The Results of this query are as follows:
PO_PO_ID|ACPTD_QTY|DEL_NUM
--------------------------
56886| 105| 1
56886| 106| 2
Now I am attempting to join the two tables, but I get multiple values appearing, using the following:
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
However the dataset I get is this:
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
However I need it show the following:
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
What do I need to do, to tweak my query?
Any help would be much appreciated.

Answer 1

I think you just need to modify your join statement to join on both columns
ON DILV.PO_PO_ID = POINET.PO_ID
AND DILV.INV_QTY = POINET.ACPTD_QTY
Actually, you can probably leave out the PO_ID, because I it's the same in both subqueries:
i.e. Just do this (on the third last line):
ON DILV.INV_QTY = POINET.ACPTD_QTY