using(alias) This method is for controlling which database the QuerySet will be evaluated against if you are using

delete() Performs an SQL delete query on all rows in the QuerySet and returns the number of objects deleted and

class Max(expression, output_field=None, **extra) [source] Returns the maximum value of the

class Q [source] A Q() object, like an

sample By default, Variance returns the population variance. However, if sample=True, the return value

prefetch_related(*lookups) Returns a QuerySet that will automatically retrieve, in a single batch, related objects

create(**kwargs) A convenience method for creating an object and saving it all in one step. Thus:

count() Returns an integer representing the number of objects in the database matching the QuerySet. The count()

values(*fields) Returns a QuerySet that returns dictionaries, rather than model instances, when used as an iterable

prefetch_related_objects(model_instances, *related_lookups) [source]