How to delete duplicate records in all tables of the database

I would like to be able to delete all duplicate records in all the tables of the database. Many of the tables have LONG columns.
Thanks.

Hello
To delete duplicates from an individual table you can use a construct like:
DELETE FROM
    table_a del_tab
WHERE
    del_tab.ROWID <> (SELECT
                            MAX(dups_tab.ROWID)
                      FROM
                            table_a dups_tab
                      WHERE
                            dups_tab.col1 = del_tab.col1
                      AND
                            dups_tab.col2 = del_tab.col2
                      )You can then apply this to any table you want. The only differences will be the columns that you join on in the sub query. If you want to look for duplicated data in the long columns themselves, I'm pretty sure you're going to need to do some PL/SQL coding or maybe convert them to blobs or something.
HTH
David

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