Aggregate with inherited columns does not work as expected

[Julian Bez]

class Thing(models.Model):
    user = models.ForeignKey("auth.user")
    creation_date = models.DateTimeField(_('Creation date'), default=datetime.datetime.now)
    amount = models.PositiveIntegerField()
    
class Book(Thing):
    blabla = models.ForeignKey("xyz")

# does not work
Book.objects.filter(user=request.user).aggregate(Sum('amount'))
# does work
Book.objects.filter(user=request.user).annotate(Sum('amount'))
# does work
Book.objects.filter(user=request.user).aggregate(Sum('book_ptr__amount'))

[Russell Keith-Magee]

(in [10466]) Fixed #10666 -- Corrected the handling of inherited fields with aggregate() and annotate(). Thanks to julienb for the report.

[Jacob]

Milestone 1.1 deleted