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Django ORM function to sum absolute values.
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from django.db.models import Sum | |
class AbsoluteSum(Sum): | |
name = 'AbsoluteSum' | |
template = '%(function)s(%(absolute)s(%(expressions)s))' | |
def __init__(self, expression, **extra): | |
super(AbsoluteSum, self).__init__( | |
expression, absolute='ABS ', output_field=IntegerField(), **extra) | |
def __repr__(self): | |
return "SUM(ABS(%s))".format( | |
self.arg_joiner.join(str(arg) for arg in self.source_expressions) | |
) |
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