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db.models.Count

class Count(expression, distinct=False, **extra) [source]

Returns the number of objects that are related through the provided expression.

Default alias: <field>__count
Return type: int

Has one optional argument:

distinct: If distinct=True, the count will only include unique instances. This is the SQL equivalent of COUNT(DISTINCT <field>). The default value is False.

Links:

https://docs.djangoproject.com/en/1.10/ref/models/querysets/#django.db.models.Count

doc_Django

2016-10-09 18:35:15

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