>>
>>
>>In other words, all fields not listed in Group By should have some aggregate function. If these fields are memo fields, then you're out of luck.
>
>Thanks for your response. There are some memo fields included. So I have to add an other outer join to the query for these fields to solve it? I didn't think about this...

Yes, you may try to re-write your select this way:

select * from Table1 inner join Table2 on Table1.Pk = Table2.fk ;
inner join (select Pk, Min(date) as MinDate from Table2 group by 1) ;
MinDate on Table2.Pk = MinDate.Pk