Alex,
Here are a couple of scripts that have come from the list in the past:
===========================================
declare
cursor get_dups is
select pk_col1, pk_col2, pk_col3, count(*)
from table
group by pk_col1, pk_col2, pk_col3
having count(*) > 1;
dupRec get_dups%rowtype;
begin
for dupRec in get_dups loop
delete from table
where pk_col1 = dupRec.pk_col1
and pk_col2 = dupRec.pk_col2
and pk_col3 = dupRec.pk_col3
and rownum = 1;
end loop;
end;
/
===========================================
Identify duplicate records:
select COL1,
COL2,
COL#,
COUNT(*)
from <OWNER>.<TABLE_NAME>
group by COL1, COL2, COL#
having count(*) > 1;
Remove duplicate records:
delete from <OWNER>.<TABLE_NAME> a
where rowid < (
select max(rowid)
from <OWNER>.<TABLE_NAME> b
where b.COL1 = a.COL1
and b.COL2 = a.COL2
and b.COL# = a.COL#
);
===========================================
Just for giggles, if you want to do this on DB2 as well, then check this
out:
http://www.searchDatabase.com/tip/1,289483,sid13_gci784575,00.html
HTH
Mark
-----Original Message-----
Ordonez
Sent: 06 February 2002 15:33
To: Multiple recipients of list ORACLE-L
Hi gurus,
I need detect and delete duplicate rows in any table, somebody helpme
thanks!!!
@lex
------------------------------------------------------------
Lic. Alexander Ordóñez Arroyo
Caja Costarricense del Seguro Social
Soporte Técnico - División de Informática
Telefono: 295-2004, San José, Costa Rica
[EMAIL PROTECTED] Icq# 30173325
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The true is out there in WWW
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