Om nah hoo pez nyeetz, hawkmaster!
SELECT
KK1.kundenid,
KK1.kundenname,
KK1.kundennummerFROM
kunde KK1
INNER JOIN
kunde KK2
ON
KK1.kundenname = KK2.kundenname
INNER JOIN
kunde KK3
ON
KK1.kundennummer = KK3.kundennummer
~~~sql
SELECT
k1.kundenid,
k1.kundenname,
k2.kundenname
FROM
kundentabelle k1
INNER JOIN
kundentabelle k2
ON
k1.kundenname = k2.kundenname
Ungetestet
Matthias