Need to convert Oracle "merge into" query to PostgreSQL - postgresql

Question

I'm trying to convert the following Oracle query to PostgreSQL:
MERGE into feepay.TRPT_W2_REPORTS TRPT1
USING(
WITH RWS AS
(SELECT PROG.BINCLIENT, TRPT.PUT_DIRECTORY
FROM feepay.program2 PROG
INNER JOIN feepay.TRPT_W2_PROGRAMS TRPT
ON (PROG.BINCLIENT = TRPT.BINCLIENT OR PROG.ISSUER_ID = TRPT.ISSUER_ID))
SELECT TCI.CUSTOMERNAME AS ACCOUNT,
TC.CUSTOMER_ID AS urn,
TC.LAST_NAME,
TC.FIRST_NAME,
TC.DOB,
TCA.ADDRESS
FROM feepay.TAU_CARDNUMBERS TCN
INNER JOIN feepay.TAU_CUSTOMER_CARDNUMBER TCCN ON (TCN.CARDNUMBER_ID = TCCN.CARDNUMBER_ID)
INNER JOIN feepay.TBLCUSTOMERS TC ON (TCCN.CUSTOMER_ID = TC.CUSTOMER_ID)
LEFT JOIN feepay.tau_customeraddress TCA ON (TC.CUSTOMER_ID = TCA.CUSTOMER_ID)
INNER JOIN feepay.TAU_ISSUER TI ON (TI.ISSUER_ID = TCN.ISSUER_ID)
INNER JOIN feepay.TBLCUSTOMERS TCI ON (TCI.CUSTOMER_ID = TI.CUSTOMER_ID)
LEFT JOIN feepay.TRPT_W2_REPORTS TRPT ON (TRPT.URN = TC.CUSTOMER_ID)
WHERE BINCLIENT IN (SELECT BINCLIENT FROM RWS)
AND TC.CUSTOMERNAME NOT IN ('freepay card','svds card')) TRPT2
ON (TRPT1.URN = TRPT2.URN)
WHEN MATCHED THEN
UPDATE SET
TRPT1.ACCOUNT = TRPT2.ACCOUNT,
TRPT1.LAST_NAME = TRPT2.LAST_NAME,
TRPT1.FIRST_NAME = TRPT2.FIRST_NAME,
TRPT1.DOB = TRPT2.DOB,
TRPT1.ADDRESS = TRPT2.ADDRESS,
TRPT1.LAST_UPDATE = now(),
TRPT1.STATUS = 'u' /* uPDATED */
WHEN NOT MATCHED THEN
INSERT (ACCOUNT, URN, LAST_NAME, FIRST_NAME, ISENTITY, DOB, ADDRESS, LAST_UPDATE, STATUS)
VALUES (TRPT2.ACCOUNT, TRPT2.URN, TRPT2.LAST_NAME, TRPT2.FIRST_NAME, 'y', TRPT2.DOB, TRPT2.MIDDLE_NAME,
TRPT2.ADDRESS, now(), 'i');
Unfortunately PostgreSQL does not support MERGE, so I'm really stuck. I hope some database pro out of here can help me with this.

Answer 1

You can use INSERT ON CONFLICT () instead:
insert into feepay.TRPT_W2_REPORTS (ACCOUNT, URN, LAST_NAME, FIRST_NAME, ISENTITY, DOB, ADDRESS, LAST_UPDATE, STATUS)
WITH RWS AS (
SELECT PROG.BINCLIENT, TRPT.PUT_DIRECTORY
FROM feepay.program2 PROG
INNER JOIN feepay.TRPT_W2_PROGRAMS TRPT
ON (PROG.BINCLIENT = TRPT.BINCLIENT OR PROG.ISSUER_ID = TRPT.ISSUER_ID)
)
SELECT TCI.CUSTOMERNAME,
TC.CUSTOMER_ID,
TC.LAST_NAME,
TC.FIRST_NAME,
'Y'
TC.DOB,
TCA.ADDRESS,
now(),
'i'
FROM feepay.TAU_CARDNUMBERS TCN
INNER JOIN feepay.TAU_CUSTOMER_CARDNUMBER TCCN ON (TCN.CARDNUMBER_ID = TCCN.CARDNUMBER_ID)
INNER JOIN feepay.TBLCUSTOMERS TC ON (TCCN.CUSTOMER_ID = TC.CUSTOMER_ID)
LEFT JOIN feepay.tau_customeraddress TCA ON (TC.CUSTOMER_ID = TCA.CUSTOMER_ID)
INNER JOIN feepay.TAU_ISSUER TI ON (TI.ISSUER_ID = TCN.ISSUER_ID)
INNER JOIN feepay.TBLCUSTOMERS TCI ON (TCI.CUSTOMER_ID = TI.CUSTOMER_ID)
LEFT JOIN feepay.TRPT_W2_REPORTS TRPT ON (TRPT.URN = TC.CUSTOMER_ID)
WHERE BINCLIENT IN (SELECT BINCLIENT FROM RWS)
AND TC.CUSTOMERNAME NOT IN ('freepay card','svds card')) TRPT2
ON CONFLICT (URN)
DO UPDATE SET
ACCOUNT = excluded.ACCOUNT,
LAST_NAME = excluded.LAST_NAME,
FIRST_NAME = excluded.FIRST_NAME,
DOB = excluded.DOB,
ADDRESS = excluded.ADDRESS,
LAST_UPDATE = now(),
STATUS = 'u' /* uPDATED */
You need to verify if the columns in the SELECT list match the columns as listed in the INSERT column list.