How to remove a line duplicate a table

Hello

I have two lines in a table of data same as duplicate. I want to remove a line from that.

When I try, it was remove the two lines of the same data.

Thank you

Remove the table table_name
where (rowid, column_name)
not in
(select min (rowid), column_name column_name PGE group)

ex:

Delete from emp
Where (ROWID, empno)
not in
(select min (rowid), empno from emp by empno group)

Tags: Database

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