Re: duplicates

In <1995Aug1.115212.57550_at_ucl.ac.uk> ucfaabe_at_ucl.ac.uk (Mr Angus Beare) writes:
>
>
>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

Assuming the table name is 'mytable' and the column in questions is called 'id', try the following...

SELECT id, count(id) "Duplicates"
FROM mytable
GROUP BY id
HAVING count(id) > 1;

-- 
Chuck Hamilton
chuckh_at_ix.netcom.com

Incoming fire has the right of way!