Inserting Non duplicate data from parent table to

Question

I have 2 tables : A and B with same columns on both the table as :

Customer_Part_Number,
Lear_Part_Number,
Shipping_ID,
Customer_Name,
Effective_Date,
End_Date,Change_ID,
PO_Number,
PO_Price

I have successfully copied all the data to table B from table A But my scenario when the records of the columns :

TENANT_ID,          
CUSTOMER_PART_NUMBER,       
SHIPPING_ID,       
EFFECTIVE_DATE         

are same in table A,I don't want it to get it inserted to table B. I have tried using the query :

INSERT INTO OSUSR_1SV_QAD_PO_DATA 
    (TENANT_ID,
     CUSTOMER_PART_NUMBER,
     LEAR_PART_NUMBER,
     SHIPPING_ID,
     CUSTOMER_NAME,
     PROGRAM_NAME,
     EFFECTIVE_DATE,
     END_DATE,
     CHANGE_ID,
     PO_NUMBER,
     PO_PRICE)
SELECT 
     TENANT_ID,
     CUSTOMER_PART_NUMBER,
     LEAR_PART_NUMBER,
     SHIPPING_ID,
     CUSTOMER_NAME,
     PROGRAM_NAME,
     EFFECTIVE_DATE,
     END_DATE,
     CHANGE_ID,
     PO_NUMBER,
     PO_PRICE 
FROM 
OSUSR_1SV_STAGING_FTP A
WHERE 
not exists
 ( SELECT TENANT_ID,
     CUSTOMER_PART_NUMBER,
     LEAR_PART_NUMBER,
     SHIPPING_ID,
     CUSTOMER_NAME,
     PROGRAM_NAME,
     EFFECTIVE_DATE,
     END_DATE,
     CHANGE_ID,
     PO_NUMBER,
     PO_PRICE
     FROM OSUSR_1SV_QAD_PO_DATA B
     WHERE
      A.TENANT_ID = B.TENANT_ID
       and A.CUSTOMER_PART_NUMBER = A.CUSTOMER_PART_NUMBER
       and A.SHIPPING_ID = B.SHIPPING_ID
       and  A.EFFECTIVE_DATE = B.EFFECTIVE_DATE )

Here, If the record of the columns TENANT_ID,CUSTOMER_PART_NUMBER,SHIPPING_ID,EFFECTIVE_DATE will be same, it wont be inserting the duplicate records.

Kindly help me out.

In the first Image there are duplicate data on table OSUSR_1SV_STAGING_FTP the basis of
TENANT_ID,
CUSTOMER_PART_NUMBER,
SHIPPING_ID,
EFFECTIVE_DATE

But I need to insert the data like Image 2 on table OSUSR_1SV_QAD_PO_DATA without duplication of TENANT_ID,
CUSTOMER_PART_NUMBER,
SHIPPING_ID,
EFFECTIVE_DATE

I have tried this query
MERGE OSUSR_1SV_QAD_PO_DATA A
USING OSUSR_1SV_STAGING_FTP B
ON (B.TENANT_ID = A.TENANT_ID and B.CUSTOMER_PART_NUMBER = A.CUSTOMER_PART_NUMBER
and B.SHIPPING_ID = A.SHIPPING_ID and B.EFFECTIVE_DATE = A.EFFECTIVE_DATE )
WHEN MATCHED THEN
DELETE WHERE ID NOT IN (SELECT MIN(ID)_
FROM OSUSR_1SV_STAGING_FTP
GROUP BY CUSTOMER_PART_NUMBER,SHIPPING_ID)
WHEN NOT MATCHED THEN
INSERT (TENANT_ID,CUSTOMER_PART_NUMBER,LEAR_PART_NUMBER,SHIPPING_ID,CUSTOMER_NAME,PROGRAM_NAME,EFFECTIVE_DATE,END_DATE,CHANGE_ID,PO_NUMBER,PO_PRICE)
VALUES(B.TENANT_ID,B.CUSTOMER_PART_NUMBER,B.LEAR_PART_NUMBER,B.SHIPPING_ID,
B.CUSTOMER_NAME,B.PROGRAM_NAME,B.EFFECTIVE_DATE,B.END_DATE,B.CHANGE_ID,B.PO_NUMBER,B.PO_PRICE);

Answer 1

Replace this part

not exists
( SELECT 1
 FROM OSUSR_1SV_QAD_PO_DATA B
 WHERE
  A.TENANT_ID = B.TENANT_ID
   --and A.CUSTOMER_PART_NUMBER = A.CUSTOMER_PART_NUMBER --you are Comparing same value here
   and A.CUSTOMER_PART_NUMBER = B.CUSTOMER_PART_NUMBER  
   and A.SHIPPING_ID = B.SHIPPING_ID
   and  CAST(A.EFFECTIVE_DATE AS DATE) = CAST(B.EFFECTIVE_DATE AS DATE) )

Answer 2

Try this Query :

        INSERT INTO OSUSR_1SV_QAD_PO_DATA 
(TENANT_ID,
 CUSTOMER_PART_NUMBER,
 LEAR_PART_NUMBER,
 SHIPPING_ID,
 CUSTOMER_NAME,
 PROGRAM_NAME,
 EFFECTIVE_DATE,
 END_DATE,
 CHANGE_ID,
 PO_NUMBER,
 PO_PRICE)

Select TENANT_ID,
 CUSTOMER_PART_NUMBER,
 LEAR_PART_NUMBER,
 SHIPPING_ID,
 CUSTOMER_NAME,
 PROGRAM_NAME,
 EFFECTIVE_DATE,
 END_DATE,
 CHANGE_ID,
 PO_NUMBER,
 PO_PRICE 
 from OSUSR_1SV_STAGING_FTP A

 INNER JOIN (select TENANT_ID,CUSTOMER_PART_NUMBER,SHIPPING_ID,EFFECTIVE_DATE from OSUSR_1SV_STAGING_FTP 
    group by TENANT_ID,CUSTOMER_PART_NUMBER,SHIPPING_ID,EFFECTIVE_DATE) as NoDuplicate ON A.TENANT_ID=NoDuplicate.TENANT_ID