          if expression == '*':
              expression = Star()
          if isinstance(expression, Star) and filter is not None:
              raise ValueError('Star cannot be used with filter. Please specify a field.')
          super().__init__(
              expression, distinct='DISTINCT ' if distinct else '',
              filter=filter, **extra
          )
  
      def _get_repr_options(self):
          return {**super()._get_repr_options(), 'distinct': self.extra['distinct'] != ''}
  
      def convert_value(self, value, expression, connection):
          return 0 if value is None else value
  
  
 
</s> remove     def __init__(self, expression, distinct=False, filter=None, **extra):
 </s> add     def __init__(self, expression, filter=None, **extra): </s> remove     def __init__(self, expression, distinct=False, **extra):
        super().__init__(expression, distinct='DISTINCT ' if distinct else '', **extra)

 </s> add  </s> remove     def __init__(self, expression, delimiter, distinct=False, **extra):
        distinct = 'DISTINCT ' if distinct else ''
        super().__init__(expression, delimiter=delimiter, distinct=distinct, **extra)
 </s> add     def __init__(self, expression, delimiter, **extra):
        super().__init__(expression, delimiter=delimiter, **extra) </s> remove     template = '%(function)s(%(distinct)s%(expressions)s)'
 </s> add 
        super().__init__(expression, filter=filter, **extra)
          if expression == '*':
              expression = Star()
          if isinstance(expression, Star) and filter is not None:
              raise ValueError('Star cannot be used with filter. Please specify a field.')
        super().__init__(expression, filter=filter, **extra)
        super().__init__(expression, filter=filter, **extra)
        super().__init__(expression, filter=filter, **extra)
        super().__init__(expression, filter=filter, **extra)
        super().__init__(expression, filter=filter, **extra)
        super().__init__(expression, filter=filter, **extra)
        super().__init__(expression, filter=filter, **extra)
  
      def convert_value(self, value, expression, connection):
          return 0 if value is None else value
  
  
keep keep keep keep replace replace replace replace replace replace replace keep keep keep keep keep
 Fixed #28658 -- Added DISTINCT handling to the Aggregate class. 
django/db/models/aggregates.py