Скачать или смотреть Django QuerySets: The Essential Foundation for Advanced Query Building (PART 1)

Welcome back to our Django QuerySet API series! In this video, we’ll explore advanced QuerySet techniques that go beyond basic methods like filter, get, and create.

We’ll cover key concepts such as lazy evaluation, QuerySet chaining, and the importance of using the Django shell for testing. You’ll also learn essential QuerySet methods that boost performance, including:

Count and Exists
Update and get_or_create
select_related and prefetch_related

Additionally, we’ll introduce F() expressions and Q objects for building dynamic queries directly in the database.

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