To find duplicates, use something like:

SELECT address, count(*)
>From Customer
GROUP BY address
HAVING count(*) > 1;

-----Original Message-----
From: Bob Sawyer [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, April 01, 2003 12:04 PM
To: MySQL List
Subject: Opposite of DISTINCT()


I know that using SELECT DISTINCT(colname) will result in output that
does not contain any duplicates from that column. But how would I output
JUST the duplicates? If I have as part of a table a column containing
email addresses, and I want to list just the duplicate addresses rather
than the distinct addresses, what's the syntax there?

Thanks,
Bob




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