Login Register

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

Comments

Leave a Comment

Please login to continue.

Popular Articles

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

Mvc\Model::count public static mixed count ([array $parameters]) Allows to count how many records match the specified conditions //How many robots are there? $number

db.models.query.QuerySet.count() count() Returns an integer representing the number of objects in the database matching the QuerySet. The count() method never raises exceptions. E

db.models.Model class Model(**kwargs) [source] The keyword arguments are simply the names of the fields you’ve defined on your model. Note that instantiating a mo

db.models.Model.pk Model.pk Regardless of whether you define a primary key field yourself, or let Django supply one for you, each model will have a property called p