And of course my approach will not work if a single parent can have more
than one detail record (of same or different kinds).
In other words, is there a valid case when a person.person_id can resolve
to two or more employee.employee_id's?
Andrus
> I was coming from the fact that master table and detail tables are all
> "one-to-one", so they share the same base ID, and when you fetch on
> master, you'll get the whole hierarchy at once. So in a query on a
> superclass we won't do an in-memory UNION, but will do an [outer] join
> instead (actually this will work like current prefetching I think). Does
> it make sense?
>
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