Hi,
Space is reused therefore ROWID are reused. You can certainly modify your
delete duplicate routine for special cases to include record must
have max date.
Rick
Denham Eva
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za> cc:
Sent by: Subject: ROWID question?
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om
10/22/2002
10:49 AM
Please respond
to ORACLE-L
Hello Gurus
Does Oracle reuse ROWID "numbers", once a delete of a row has been done?
The reason I ask is because, I need to delete duplicate records from a very
large table.
However I must keep the newest date in one of the date columns.
If oracle does not reuse the ROWID this would be very simple. Here is my
sql:
DELETE FROM tablename a
WHERE ROWID <> (SELECT MAX(ROWID)
FROM tablename b
WHERE a.col1 = b.col1
AND a.col2 = b.col2
AND a.col3 = b.col3);
However if Oracle does reuse ROWID's then I have a serious sql problem :)
All the examples I have of deleteing duplicates use the ROWID.
If anyone has a suggestion on how else to do this I would be most grateful.
Otherwise answer on my main question would be fine.
Many Thanks
Denham Eva
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