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