How to choose only values in double

Hi guys,.

How can I retrieve only duplicate values in a column?
Then,
How can I remove duplicate values?

Best wishes
Fateh

PLEASE CHECK THIS:

Select * from TABLENAME
WHERE DUPLICATECOLNAME = (select DUPLICATECOLNAME from TABLENAME ANY
where rowid NOT in (select max (rowid) of the TABLENAME of DUPLICATECOLNAME group))

Tags: Database

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