SQL Query to find duplicates not returning any results

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Published on 2010-04-28T16:00:43Z Indexed on 2010/04/28 16:03 UTC
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sql-server

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sql

I know there are duplicate account numbers in this table, but this query returns no results.

SELECT [CARD NUMBER],[CUSTOMER NAME],[ACCT NBR 1],[ACCT NBR 2],

COUNT([ACCT NBR 1]) AS NumOccurences

FROM DebitCardData.dbo.['ATM Checking Accts - Active$']

GROUP BY [CARD NUMBER],[CUSTOMER NAME],[ACCT NBR 1],[ACCT NBR 2]

HAVING (COUNT([ACCT NBR 1])>1)

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