>You can do this in two steps

SELECT field1, field2, MAX(field3) AS max3 ;
>  FROM curFirst ;
>  group by Field1, Field2 ;
>  INTO CURSOR crsTemp
>
>SELECT * ;
>	FROM curFirst  ;
>	WHERE STR(Field1) + STR(Field2) + STR(Field3) ;
>		IN ( SELECT STR(Field1) + STR(Field2) + STR(max3)
>				FROM crsTemp );
>	INTO CURSOR crsResult

Which is what I did, in a slightly different manner on the second one, using a join. I thought there was a way to do it in a single select - and it almost worked, except it retrieved partial set of records only.