class Cast(expression, output_field) [source]
New in Django 1.10.
Forces the result type of expression to be the one from output_field.
Usage example:
>>> from django.db.models import FloatField
>>> from django.db.models.functions import Cast
>>> Value.objects.create(integer=4)
>>> value = Value.objects.annotate(as_float=Cast('integer', FloatField())).get()
>>> print(value.as_float)
4.0
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