Nu stiu daca inteleg prea bine dar poate vrei ceva de genul:

SELECT nrcontract,appid,rezolutie, comentarii,
(
SELECT max(c)
FROM (
SELECT dataplata AS c, nrcontract
FROM history
UNION ALL
SELECT lastphonedate AS c, nrcontract
FROM history
) u
WHERE h.nrcontract = u.nrcontract
)as t2,
max(contactno)+1 as MaxC, lastmodifiedby, lastmodifydate
FROM history h
WHERE nrcontract='1'
GROUP BY nrcontract, appid, rezolutie, comentarii, lastmodifiedby, lastmodifydate

Te rog sa postezi scriptul de creare pentru tabela si sa explici ce anume doresti sa intoarca selectul. Asa doar am presupus cate ceva .........

---

Cătălin D.