The date is returned as a string, Year-Month-Day. There is no built in function, but you can create your own.
Let ( Dlist = Substitute ( QueryResult ; "-" ; ¶ ) ; date ( GetValue ( Dlist ; 2 ) ; getValue ( Dlist ; 3 ) ; getValue ( DList ; 1 ) ) )
This assumes that your query is returning the date from a single field from a single record.
Yes, that is one way.
is another, as well as
Keep in mind that the result is formatted as: mm/dd/yyyy OR dd/mm/yyyy (depending on the settings for your computer and possibly the version of FileMaker).
(get the pdf and the example files!)