INNER JOIN problemmer, help

the syntax for an INNER JOIN is

SELECT sagsnummer
FROM casecontrol2005 INNER JOIN casecontrol2006 ON casecontrol2005.SomeField = casecontrol2006.SomeField WHERE .....

But I dont understand why you need an inner join when you only select one field which is the same as the field in the WHERE!!!


Kunde.Kundenr=Produkt.KundeNr