delete from z where rowid in (select rowid from z a where a.rowid >
(select
min(rowid) from z b where a.x = b.x));

Alexander Ordonez wrote:
> 
> Hi gurus,
> I need detect and delete duplicate rows in any table, somebody helpme
> thanks!!!
> 
> @lex
> ------------------------------------------------------------
>   Lic. Alexander Ord��ez Arroyo
>   Caja Costarricense del Seguro Social
>   Soporte T�cnico - Divisi�n de Inform�tica
>   Telefono: 295-2004, San Jos�, Costa Rica
>   [EMAIL PROTECTED]        Icq# 30173325
> 
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