Django prefetch_related Examples|Django select_related and prefetch_related|Django n+1 Query Problem скачать в хорошем качестве

Django prefetch_related Examples|Django select_related and prefetch_related|Django n+1 Query Problem

In this video, I'm gonna be showing you what exactly is prefetch_related in Django. We will demonstrate Django prefetch_related by making use of an example project which has two models and these models are related to each other using a ManytoMany relationship. We will show you what exactly is the use case of Django prefetch_related by querying the Django models and showing the corresponding SQL queries being executed in the background by making use of django debug toolbar. We will then explain the problems with the default accessing method and specifically about the n+1 query problem in Django ORM. Then, we will fix the n+1 problem using Django prefetch_related. We will also talk about the underlying SQL queries being executed if we use prefetch_related. At the end, we will also talk about the difference between prefetch_related and select_related, when to use Django select_related and when to use Django prefetch_related and so on. This video is a part of Django Relationships series. Subscribe | Code Band Django select_related :    • Django select_related Examples |Django sel...   Django Debug Toolbar :    • Django Debug Toolbar | Tutorial | How to U...   Django prefetch_related Docs : https://docs.djangoproject.com/en/3.0... Medium article on Django prefetch_related :   / django-select-related-and-prefetch-related   Other videos in Code Band: Django Autocomplete with jQuery UI | AJAX | Search | Filter from Database | Tutorial | Code Band :    • Django Autocomplete with jQuery UI | AJAX ...   Build a Weather App in Django | Scrape Weather Data from Google | Beautiful Soup | Python Requests :    • Build a Weather App in Django | Scrape Wea...   Python .env File | Django .env File Example | Python Decouple Django | Django Environment Variables :    • Python .env File |  Django .env File Examp...   Django Dependent Drop Down List Example | Integration with Django Forms and Django Form Validations :    • Django Dependent Drop Down List Example | ...   Django Select2 Tutorial | Django Dropdown | Django ajax Dropdown | Django Search and Filter :    • Django Select2 Tutorial | Django Dropdown ...   Django Shell Plus | Advanced Django Shell | Django Shell Commands | Django Shell Tutorial :    • Django Shell Plus | Advanced Django Shell ...   Django Seed Data into Database Models | Django Faker | Django loaddata | Django Dummy Data :    • Django Seed Data into Database Models | Dj...   3 Cool Django Features that Django Developers are Not Aware of :    • 3 Cool Django Features that Django Develop...   Build a Weather App in Django | Scrape Weather Data from Google | Beautiful Soup | Python Requests :    • Build a Weather App in Django | Scrape Wea...   Django Custom User Model | Email as Username | Phone as Username | Authentication Example |Code Band :    • Django Custom User Model | Email as Userna...   Playlist | Django Authentication | The easiest and actual way of doing it :    • Django Authentication Tutorial   Playlist | Django Relationships | Explained with Example by Code Band :    • Django Relationships | Explained with Exam...   Custom Model Manager & Model QuerySet in Django :    • Custom Model Manager & Model QuerySet in D...   Render Django Form Manually : Make Custom Form with Form Validations -    • Render Django Form Manually - Make Custom ...   Generic Class Based Views in Django | Introduction & Create View in Django | Learn by Example | CRUD :    • Generic Class Based Views in Django | Intr...   How to Deploy Django Project on Heroku for Free :    • How to Deploy Django Project on Heroku for...   Connect Django with MySQL :    • How to Connect Django With MySQL Database ...   Instagram Automation using Python :    • Instagram Automation using Python | Web Au...   Top 5 Programming Languages to Learn in 2020 :    • Top 5 Programming Languages to Learn in 20...   :) You Can Find Me On: My Website - Linkedin -   / akjasim   Github - https://github.com/akjasim/ Facebook -   / jasimakjasim   Twitter -   / akjasim   Instagram -   / jasim_ak