How to TRUNCATE TABLE using Django's ORM?

The closest you'll get with the ORM is Book.objects.all().delete().

There are differences though: truncate will likely be faster, but the ORM will also chase down foreign key references and delete objects in other tables.

You can do this in a fast and lightweight way, but not using Django's ORM. You may execute raw SQL with a Django connection cursor:

from django.db import connection
cursor = connection.cursor()
cursor.execute("TRUNCATE TABLE `books`")

You can use the model's _meta property to fill in the database table name:

from django.db import connection
cursor = connection.cursor()
cursor.execute('TRUNCATE TABLE "{0}"'.format(MyModel._meta.db_table))

Important: This does not work for inherited models as they span multiple tables!