Options.abstract If abstract = True, this model will be an abstract base class

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

class Avg(expression, output_field=FloatField(), **extra) [source] Returns the mean value

Options.default_permissions Defaults to ('add', 'change', 'delete'). You may customize this list, for example,

class When(condition=None, then=None, **lookups) [source] A When() object is

Field.auto_created Boolean flag that indicates if the field was automatically created, such as the OneToOneField

Model.delete(using=DEFAULT_DB_ALIAS, keep_parents=False) [source] Issues an SQL DELETE

class ExtractMinute(expression, tzinfo=None, **extra) [source] lookup_name

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

template A class attribute, as a format string, that describes the SQL that is generated for this function. Defaults to