Re: duplicates

>ucfaabe_at_ucl.ac.uk (Mr Angus Beare) wrote:
>
>I have a table that I want to create a unique index for
>but I can't because of duplicates. Oracle won't tell
>me where they are.
>
>Does anyone know a quick way to find duplicate records?
>
>thanks for any suggestions
>
>Gus
>
>--
>Angus Beare

SELECT key_field, ROWID FROM table
WHERE key_field IN
(SELECT key_field FROM table
 GROUP BY key_field
 HAVING COUNT (key_field) > 1);

This will show the key-field and where they are located of all duplicated keys.

James Richard (JRICHARD_at_TUNS.CA)
"No Assembler Required!" Received on Wed Aug 02 1995 - 00:00:00 CEST