Assuming that we have duplicate rows ( NOT duplicate keys ), you may try this. I have
borrowed this from a friend of mine.
We have used it successfully. Each of the columns in the table are included as
predicates to confirm that we are deleting only the duplicate rows.
delete from noderelatedreplicationqueue a
where rowid < (select max(rowid) from noderelatedreplicationqueue b
where a.NODENBR = b.NODENBR
and a.LASTUPDATETS = b.LASTUPDATETS
and a.NODEABOVENBR = b.NODEABOVENBR
and a.TRANSACTIONTYPEIND = b.TRANSACTIONTYPEIND
and a.NODETYPECD = b.NODETYPECD
and a.NODEABOVETYPECD = b.NODEABOVETYPECD
and a.DISTANCENBR = b.DISTANCENBR
and a.MARKETCD = b.MARKETCD
and a.TOPLEVELIND = b.TOPLEVELIND
and a.LOGICALDELETEIND = b.LOGICALDELETEIND
and a.LASTUPDATENBR = b.LASTUPDATENBR )
Hope this helps.
Govind
-----Original Message-----
Rama, Shreekantha (K.)
Sent: Thursday, October 16, 2003 3:45 PM
To: Multiple recipients of list ORACLE-L
Hi,
I am trying to remove the duplicate rows from a table with the column data..
I cannot use PK as it's just a sequence number...
I could find all the duplicate rows by grouping the column. but how can i
delete only the duplicate ones and retain the original data..
Any help is gr8 ! ! !
Warm Regards
Shreekanth
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