How to remove duplicate Oracle lines and retain the last rows in double

Hello

I have millions of records in the table. Some values / duplicate rows are inserted into it.
I want to just delete the duplicate lines but I also want to keep the last duplicate line.
For example if a record is found three times, I want to delete the first and second record and keep
the third is to say the last inserted a.


Concerning
Valérie Singh

Hello

PLS, try the commond...!

1.
delete from  a where rowid<(select max(rowid) from  b
where a.ID = b.ID (or perticular column name). 

OR 

2.
delete from  a where rowid>(select min(rowid) from  b
where a.ID = b.ID (or perticular column name). 

for example emp table a.empno=b.empno;

* If you are satisfied with this answer make as correct
* If you're ok withi this answer helpful also

Concerning
KPR

Tags: Database

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