Graphical calculation view to get min and max of a date

Hi all,

I have a requirement that doesn't seem to work although the idea is simple.

I have a customer, and the customer is in a customer group.  The customer has transactions that occur on a date.

The requirement is that I need the Latest transaction date for every customer, and then the Earliest transaction date for every group.

In SQL that would be:

SELECT Group, min(TranDate) AS TranDate FROM (SELECT Group, Customer, max(TranDate) AS TranDate FROM TABLE GROUP BY Group, Customer) GROUP BY  Group;

In a Graphical Calc View the sequence should be:

Projection Node with Table

Aggregation Node on Group and Customer, and max on TranDate

Aggregation Node on Group and min on Trandate

Semantics Node with Group and TranDate.

But when I run this I always get the Group and MAX(TranDate).....

Any ideas?

Regards

Jack