Show latest date in field.

I have a portal row that displays products with date of purchase, on my main layout I would like to have a field that displays the latest date of the purchased product.

How can that be done?

Thanks

If you sort the relationship by dateofpurchase desc., then the parent will see the first child record which will be the most recent purchase.

This is the most accurate way, since the last created record may not be the most recent purchase.

Sorry it was not to clear. I have a field in my layout and a portal. In the portal all the date entries are displayed, but in the field it should just show the latest date info from the portal record.

Edited March 11, 200916 yr by Guest

Use the Max Function with the same relationship as the portal.

What is the max function?

It is one of the Aggregate functions.

From FMP Help:

"Returns the highest valid value in:

a repeating field (repeatingField).

a field in matching related records specified by (table::field), whether or not these records appear in a portal.

several non-repeating fields in a record (field1;field2;field3...).

corresponding repetitions of repeating fields in a record (repeatingField1;repeatingField2;repeatingField3), if the result is returned in a repeating field with at least the same number of repeats.

several fields in the first matching record specified by (table::field1;table::field2;...). You can include fields from different tables (table 1::field A;table 2::field B...)."

Works great! Thanks