Hi,
Try this query:
SELECT T0.[CardCode], T0.[CardName], T0.[CardType], T0.[Balance] FROM OCRD T0 left join ( select cardname from ocrd) t1 on t0.cardname = t1.cardname GROUP BY T0.[CardCode], T0.[CardName], T0.[CardType], T0.[Balance]
having count(t0.cardname) >1
Thanks & Regards,
Nagarajan