Help with clean up duplicate records

One of my tables have duplicate records in paris that needs to be cleaned up. I want to cleanup the earlier TIMESTAMP.
ID MODIF_TIME_STAMP
483070 1/7/2005 11:49
483070 1/13/2005 17:19
483071 1/6/2005 11:49
483071 1/14/2005 17:19
483072 1/15/2005 11:49
483072 1/07/2005 17:19
9000 records
What is the easiest way to pick only the ID of the earlier timestamp of each pair.
Thanks in advance.
Ittichai

Hallo,
delete from your_tab
where rowid in
(select rowid from
(select rowid, id, modif_time_stamp, row_number() over (partition by id order by modif_time_stamp desc) rn from your_tab)
where rn > 1
)This query deletes records with earlier date for every id
Regards
Dmytro
Message was edited by:
Dmytro Dekhtyaryuk

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