Question

We got big table with nearly 100+ millions rows. Can someone help how to find duplicate data within the table and may be move it to ARCHIVE

Table Name: CustomerData
NumberofFields: 10

Latest one should stay (which is identified by END_DATE mentioned as NULL in that record)

Regards

Answer 1

You just need to move the rows where END_DATE isn’t NULL?

In a single transaction:

INSERT INTO archive (column1, column2, ... column10)
SELECT column1, column2, ..., column10
FROM CustomerData
WHERE END_DATE IS NOT NULL

DELETE CustomerData
WHERE END_DATE IS NOT NULL