RE: Duplicate rows

From: Alexander Ordonez <aordonez_at_ccss.sa.cr>
Date: Wed, 06 Feb 2002 10:27:30 -0800
Message-ID: <F001.00407939.20020206093325@fatcity.com>

thanks for your help!!!

@lex

---

  Lic. Alexander Ordóñez Arroyo

  Caja Costarricense del Seguro Social                             
  Soporte Técnico - División de Informática                     
  Telefono: 295-2004, San José, Costa Rica                    
  Aordonez_at_ccss.sa.cr        Icq# 30173325

------------------------------------------------------------

The true is out there in WWW

> -----Mensaje original-----
> De: Mark Leith [SMTP:mark_at_cool-tools.co.uk]
> Enviado el: Miércoles 6 de Febrero de 2002 10:48 AM
> Para: Multiple recipients of list ORACLE-L
> Asunto: RE: Duplicate rows
>
> 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
> Aordonez_at_ccss.sa.cr Icq# 30173325
>
> ------------------------------------------------------------
> The true is out there in WWW
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.com
> --
> Author: Alexander Ordonez
> INET: aordonez_at_ccss.sa.cr
>
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> --
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> --
> Author: Mark Leith
> INET: mark_at_cool-tools.co.uk
>
> Fat City Network Services -- (858) 538-5051 FAX: (858) 538-5051
> San Diego, California -- Public Internet access / Mailing Lists
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--
Please see the official ORACLE-L FAQ: http://www.orafaq.com
--
Author: Alexander Ordonez
  INET: aordonez_at_ccss.sa.cr

Fat City Network Services    -- (858) 538-5051  FAX: (858) 538-5051
San Diego, California        -- Public Internet access / Mailing Lists
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Received on Wed Feb 06 2002 - 12:27:30 CST