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Join Returns Duplicate Rows


Hi,
I'm having a little trouble with the following code:

SELECT DISTINCT cd1.*, cd2.*
FROM Table1 cd1 LEFT JOIN Table2 cd2
ON cd1.RegNr=cd2.RegNr
WHERE cd1.RegNr = $RegNr

I want it to return the 2 rows that is present in the tables but it returns 4.

1262007-10-20 10:14:00
1262007-10-20 10:14:00
1262007-10-20 10:17:00
1262007-10-20 10:17:00


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I have the following SQL statement:
SELECT part_number,
COUNT(part_number) AS NumOccurrences
FROM Products
GROUP BY Part_number
HAVING COUNT(part_number) > 1
 

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