Django model queries

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Django queryset tutorial: Making Queries in Django

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In this video, I have explained you how to make queries in django. Django is a powerful framework which lets you query your database right from the python backend. This video explains how to do that!

Database Model Queries | Django (3.0) Crash Course Tutorials (pt 7)

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Checkout my new Django Course! 🤍 Django database queryesets Follow me on Twitter: 🤍 Linkedin: 🤍 Source code + Live Demo: 🤍

How to Write Complicated Queries in Django With F Expressions

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In this video I talk about to write F expressions in Django. These allow you to use multiple fields in your model together in one query. Need one-on-one help with your project? I can help through my coaching program. Learn more here: 🤍 Get the code here: 🤍 Web Development Courses: 🤍 Subscribe: 🤍 Twitter: 🤍 Github: 🤍

How Model Queries Work in Django

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Queries are important in any web development framework because you'll be pulling in data for your app to work properly. In this video I show you how to write queries in Django. Need one-on-one help with your project? I can help through my coaching program. Learn more here: 🤍 Download the code here: 🤍 Join my free course on working with the database and models in Django: 🤍 Get the Django cheat sheet here: 🤍 Web Development Courses: 🤍 Subscribe: 🤍 Twitter: 🤍 Facebook: 🤍 Github: 🤍 Instagram: 🤍 Google Plus: 🤍

Django bypass ORM! - Performing raw SQL queries without the ORM

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The Django ORM series covers a range of common functions that you will perform on a database with Django. In this tutorial we introduce the idea of running your own SQL queries, thus bypassing the Django ORM features. This is an introductory guide to help you get start with the general concepts and structure of building SQL queries outside of the Django ORM. 00:00 Introduction Code Repository 8 🤍 ✨ Support us - join us as a very academy member 🤍 👍SUBSCRIBE to get more free tutorials, courses and code snippets! 🤍 👍👍Follow us on Facebook 🤍 👍👍👍Follow use on Twitter: 🤍

DjangoCon 2022 | Deep Inside Django's ORM: How Django Builds Queries

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Deep Inside Django's ORM: How Django Builds Queries by Bas Steins Django's ORM is probably the most powerful feature of this framework. This talk is about how queries to the database are internally translated into SQL with Query objects and how to hack that process.

PYTHON tutorials by Mr. Vijay Sir

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PYTHON tutorials by Mr. Vijay Sir

Django - Database Queries

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17.04.2020

Accessing Data From a Database is a very impotent part of a django project, in this video we will try some very interesting features for retrieve data from django models (Database) like filter the data according to our requrement, ordering data and many more feature of django. Django Models: 🤍 Django - Database Queries

Learn the basics of Django's Model Managers and Querysets

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31.12.2018

In this tutorial we're covering the basics of model managers and querysets in Django. 🤍 ☝ Get exclusive courses & become a better Django developer ✌️ Stay in touch Facebook: 🤍 Instagram: 🤍 Twitter: 🤍 Email: admin🤍justdjango.com Thank you for watching and don't forget to subscribe :)

Master Django ORM | Learn Core Concepts about Django ORM which no one tells

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Master Django ORM | Learn Core Concepts about Django ORM which no one tells - In this video, I have taught about Django ORM. Django ORM is very powerful in terms of querying data but a lot of people don't have any idea about how they can query efficiently so I have made a video on Django ORM which teaches about full Django ORM concepts in deep. After watching this video, you will become a complete master in Django ORM because in interviews a lot of companies do ask from django ORM. #django #djangoorm #pythondjango #djangointerviews Link of registration for Newton School's January Batch - 🤍 Newton school is an online Edtech company providing the highest-rated FULL STACK DEVELOPMENT PROGRAM for professionals, graduates, and women. NEWTON SCHOOL is your gateway to a high-paying tech career in 6 months with Zero fees till placement, transforming you into a rockstar full-stack developer earning 5-40 Lakh per annum salary. Newton School’s students are already working in more than 150+ top companies of India including Zomato, Unacademy, Deloitte, Nutanix, etc. To watch more videos on programming, Data Structures, Android Development, Data Science, C, Java, React, subscribe to our channel. Do visit Newton school Launchpad through: 🤍 Subscribe | Like | Comment To know more about us and our courses, please visit: 🤍 Follow us on Facebook: 🤍 Instagram: 🤍 Linkedin: 🤍

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

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In this video, I'm gonna be showing you what exactly is select_related in Django. We will demonstrate Django select_related by making use of an example project which has two models and these models are related to each other using Foreign Key. We will show you what exactly is the use case of Django select_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 select_related. We will also talk about the underlying SQL queries being executed if we use select_related. This video is a part of Django Relationships series and the next video in this Django Relationships series would be Django prefetch_related. Subscribe | Code Band Django select_related Docs : 🤍 Django Debug Toolbar : 🤍 Django prefetch_related Examples|Django select_related and prefetch_related|Django n+1 Query Problem : 🤍 Other videos in Code Band: Django Autocomplete with jQuery UI | AJAX | Search | Filter from Database | Tutorial | Code Band : 🤍 Django Seed Data into Database Models | Django Faker | Django loaddata | Django Dummy Data : 🤍 3 Cool Django Features that Django Developers are Not Aware of : 🤍 Build a Weather App in Django | Scrape Weather Data from Google | Beautiful Soup | Python Requests : 🤍 Django Custom User Model | Email as Username | Phone as Username | Authentication Example |Code Band : 🤍 Playlist | Django Authentication | The easiest and actual way of doing it : 🤍 Playlist | Django Relationships | Explained with Example by Code Band : 🤍 Custom Model Manager & Model QuerySet in Django : 🤍 Render Django Form Manually : Make Custom Form with Form Validations - 🤍 Generic Class Based Views in Django | Introduction & Create View in Django | Learn by Example | CRUD : 🤍 How to Deploy Django Project on Heroku for Free : 🤍 Connect Django with MySQL : 🤍 Instagram Automation using Python : 🤍 Top 5 Programming Languages to Learn in 2020 : 🤍 :) You Can Find Me On: My Website - 🤍 Linkedin - 🤍 Github - 🤍 Facebook - 🤍 Twitter - 🤍 Instagram - 🤍

Django ORM - Performing raw SQL queries

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20.10.2020

The Django ORM series covers a range of common functions that you will perform on a database with Django. In this tutorial we introduce the idea of running your own SQL queries, thus bypassing some of the Django ORM features. This is an introductory guide to help you get start with the general concepts and structure of building raw SQL queries. 00:00 Introduction Code Repository 7 🤍 ✨ Support us - join us as a very academy member 🤍 👍SUBSCRIBE to get more free tutorials, courses and code snippets! 🤍 👍👍Follow us on Facebook 🤍 👍👍👍Follow use on Twitter: 🤍

Ivaylo Donchev - Django queries optimization

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Django queries optimization [EuroPython 2018 - Talk - 2018-07-26 - Kilsyth] [Edinburgh, UK] By Ivaylo Donchev Collecting data from multiple Models is a common flow in Django development. In most of the cases prefetch_related and select_related do all of the job for optimizing the queries. When the models structure become complicated enough and we've put our logic for collecting these items in models' properties we suddenly cannot use prefetch_related or select_related anymore. Our View 's queries count depends on selected items count with high complexity. The problem is in the selection logic: we've implemented an algorithm which calculates something and we cannot prefetch or select all of the objects. So this talk's purpose is: To show how to use Django ORM to move the selection logic, the calculations, the aggregations over group of objects from our python code to our database and moving all of the logic for this in one place - the queryset and test it easily. License: This video is licensed under the CC BY-NC-SA 3.0 license: 🤍 Please see our speaker release agreement for details: 🤍

QuerySet API Methods that return new QuerySets in Django (Hindi)

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QuerySet API in Django 00:00:00 What is QuerySet 00:01:55 query property 00:02:33 Methods that return new QuerySets 00:02:57 Retrieving all objects - all() method 00:28:28 filter() method 00:33:46 exclude() method 00:35:40 order_by() method 00:41:44 reverse() method 00:45:09 values() method 00:49:03 distinct() method 00:49:19 values_list() method 00:54:09 using() method 00:56:55 dates() method 01:01:03 datetimes() method 01:02:23 none() method 01:02:43 union() method 01:16:22 intersection() method 01:20:15 difference() method 01:23:12 Some other methods 01:25:11 Operators that returns new QuerySets - AND &, OR | Django Playlist: 🤍 Core Python Tutorials: 🤍 Advance Python Tutorials: 🤍 HTML Tutorials : 🤍 CSS Tutorials: 🤍 SQL Tutorials: 🤍 Check Out Our Other Playlists: 🤍 SUBSCRIBE to Learn Programming Language ! 🤍 Learn more about subject: 🤍 If you found this video valuable, give it a like. If you know someone who needs to see it, share it. If you have questions ask below in comment section. Add it to a playlist if you want to watch it later. T A L K W I T H M E ! Business Email: contact🤍geekyshows.com Facebook: 🤍 Twitter: 🤍 Website: 🤍 _ Make sure you LIKE, SUBSCRIBE, COMMENT, and REQUEST A VIDEO! :) _

Database model queries | Django 4.0 | Django fundamentals - Part 10

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Database model queries 📑 My tech blog: 🤍 🧑‍💻 Python Django: Ultimate Beginners Course - 2022: 🤍 🎨 Twitch digital art: 🤍

Building effective Django queries with expressions - Vanessa Barreiros

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This talk was presented at PyBay2019 - 4th annual Bay Area Regional Python conference. See pybay.com for more details about PyBay and click SHOW MORE for more information about this talk. Description In Django, we have a powerful tool called ORM to manipulate databases easily. For small queries, it can be quite simple, but what happens when you need to do tricks like nested queries or computed values? One of the answers is query expressions. In this talk, we'll learn how to power-up queries with them by walking through comparisons and examples with a dataset. Abstract It's known that ORMs are a powerful tool to manipulate databases with ease. In Django, there are a set of out-of-the-box abstractions to help perform queries and shape them through annotations, aggregations, order by, and so on, hence saving one's time. A common solution to filtering when models grow larger over time is creating redundant fields; a better solution is using Django built-in resources called query expressions. Query expressions are smart yet straightforward functions that one can use to compute values on query execution and do string manipulation, calculations, among others, thus removing the burden of having unnecessary extra columns in our database. Using query expressions effectively can help to generate performant queries, avoiding potential inconsistencies and separating concerns. This talk focuses on further optimizing Django queries by walking through code comparisons and examples with a dataset, diving into subjects such as custom database functions, conditional expressions, and filtering so to answer questions about the data. Original slides: 🤍 About the speaker I'm a full stack developer at Vinta Software (🤍vinta.com.br) and Django Girls organizer at my hometown, Recife. When not coding and working on personal projects, I'm usually cooking and watching Grey's Anatomy. Sponsor Acknowledgement This and other PyBay2019 videos are via the help of our media partner AlphaVoice (🤍 #pybay #pybay2019 #python #python3 #gdb

Database Model Queries | Query and Display Data. Python Django Web Framework Course. #13

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Database Model Queries | Query and Display Data. Python Django Web Framework Course. #13 Full video. 🤍 Alternative Full playlist. 🤍 Full series source code. 🤍 Follow me for updates on Twitter. 🤍 Follow me for updates on Instagram. 🤍 Follow me for updates on Github. 🤍 Contact me by email. crycetruly🤍gmail.com

DJANGO ORM QUERY OPTIMIZATION | Python

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Andrey Ivanov - Python Use my discount link for OKEX crypto exchange: 🤍 My UDEMY courses: 🤍 Donations: 🤍 Github: 🤍 Telegram канал: 🤍 Other videos on Python: 🤍 Leave your like and subscribe! #Python #program #it #tutorial #guide #begginers #code #programming

Learning Django -Model Queries - # 6

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Learning Django - Model Queries Books: 🤍 🤍 Topics: Django Model queries Please join in Our Social Networking platforms for quick updates ————————————————- Facebook : 🤍 Instagram : 🤍 Twitter: 🤍 LinkedIn : 🤍 Telegram : 🤍 #python​​​​​ #pythonprogramming​​​​​ #datascience​​​​​ #machinelearning​​ #sql​​​​​ #nosql​​​​​ #mongodb​​​​​ #cassandra​​​​​ #neo4j​​​​​ #graph​​​​​ #newsql​​​​​ #djangomodels​​ #djangorestframework​​ #postgres​​​​​ #pythonresources​​​​​ #Pythonprojects​​​​​ #datascienceresources​​​​​ #AIresources​​​​​ #django​​​​ #Djangolivecoding​​ #Pythonweb​​​​ #djangoprojects​​ #djnagoforbeginners​​

W7D1: Django Models & Queries (1 of 1)

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Quebec Platoon March 14th, 2022 0:00:00 Setting up Django project 0:13:08 Creating Models 1:07:28 Adding data to the Database

Faster Django Queries With Materialized Views

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05.07.2022

Materialized views can be very useful for creating reports that will be used repeatedly. They cut down on query times because the query has already been made, and the view has been written to the disk. In this video, Nafiul Islam demonstrates how to create materialized views, explains the benefits of using them, and shows how to integrate them into Django ORM. 00:17 – Project overview 00:43 – Color coding your tables 01:54 – Using the query console 04:21 – Creating a materialized view 05:28 – Performance with and without materialized views 05:55 – Connecting a materialized view to a Django model 07:40 – Trying out the model in the Django console 08:47 – Fixing issues arising from there being no primary key in a Django model 09:16 – Changing your materialized view 12:32 – Exporting Django ORM queries to SQL 13:30 – Using the EXPLAIN keyword 14:13 – Refreshing your materialized views

Django ORM | Delete Data | Get vs Filter | View SQL Raw Queries

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By the end of this tutorial you would have learnt how to: - use differing approaches to delete single database table rows - display the SQL for executed queries - select and delete multiple rows - delete all rows in a given table Code Repository: 🤍

How to Use Select Related and Prefetch Related in Django

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In this video, I will talk about how you can use both select_related and prefetch_related to increase the performance of your querysets in Django. Need one-on-one help with your project? I can help through my coaching program. Learn more here: 🤍 Understanding Django course: 🤍 Get the code here: 🤍 Django Debug Toolbar video: 🤍 Web Development Courses: 🤍 Subscribe: 🤍 Twitter: 🤍 Github: 🤍

Mastering django query | How to master django queries | Part 1

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Hello, in this video I have taught how you can master Django query which is a very powerful skill to create some great project. In this series of video, you will understand how you can query the database using Django ORM. We all use queries to retrieve data from the database. Querysets are Django's way to retrieve data from the database. The Django ORM lets us use querysets.

46 - Complex Search using Django Q Lookups - Python & Django 3.2 Tutorial Series

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46 - Complex Search using Django Q Lookups - Python & Django 3.2 Tutorial Series Try Django 3.2 is a series to teach you the fundamentals of creating web applications with Python & Django by building a real project step-by-step. ⦿ Playlist: 🤍 ⦿ DigitalOcean $100 Promo: 🤍 ⦿ Code: 🤍 ⦿ Subscribe: 🤍 ⦿ Setup Video for Python 3 & Django 3: 🤍

Make your django query faster | Select related and prefetch related Django

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In this video how you can make your Django query faster by using simple things select related and prefetch related Django. What's the difference between select_related and prefetch_related in Django Code Keen needs your help. Please donate if you think my tutorials are helping you. All your donation will be used to enhance the tutorial quality. UPI ID FOR DONATION - abhijeetg40🤍oksbi To view, the installation of the Django debug toolbar start this video from 11:17 🤍 Django select related and prefetch related in Django with example. django select related django query related objects django model select_related django select_related all fields django select_related all python django select_related django select_related queryset django select_related only django queryset get select_related django select_related null=true django select_related inner join django select_related 3 tables django viewset select_related django model select_related filter django query related table select_related in template django django select_related and filter django select_related custom queryset django 3 select_related django select_related lookup select_related in django orm django select_related count django query related field django select_related property django import select_related django raw sql select related django select_related rows django select_related distinct django query get related django select_related recursive django prefetch related django rest prefetch_related django select_related list django prefetch_related to_attr prefetch_related filter django queryset django prefetch_related result django prefetch_related annotate django admin inline prefetch_related django user prefetch_related django select_related with condition prefetch_related django.db django polymorphic prefetch_related django select_related onetoonefield django orm prefetch_related example prefetch_related in django django prefetch_related from prefetch_related in django admin def prefetch_related django django select_related limit django prefetch_related relation django queryset values prefetch_related django prefetch_related values_list django chain select_related django listview prefetch_related django prefetch_related template django prefetch_related order_by django select_related through django prefetch_related related_name django prefetch_related serializer django select_related cache

Querying One-To-Many Relationships in Django

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In this video I talk about a couple of ways to query across one-to-many relationships in Django. Need one-on-one help with your project? I can help through my coaching program. Learn more here: 🤍 Join my free course on the basics of using the database in Django: 🤍 Web Development Courses: 🤍 Subscribe: 🤍 Twitter: 🤍 Facebook: 🤍 Github: 🤍 Instagram: 🤍 Google Plus: 🤍

View Django Raw SQL queries | Django ORM Course

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The Django database ORM course provides learners with a complete overview of the Django Framework ORM (Object-relational mapping) through applied learning. In this course, you’ll learn about the features of Django ORM and SQL. By better understanding the features of the Django ORM, you will learn how to interact with databases from within a Django project, as you would with SQL. At level 1 you will learn how to administrate tables and perform common Create, Return, Update and Delete (CRUD) operations through the Django ORM. Udemy Course Link: Django Database ORM Mastery Level 1 = 🤍 YouTube Playlist = 🤍 GitHub Code Repository = 🤍

Django Full Course - 2.4 - Making queries. Querying and filtering JSONField

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In this lesson we will cover the topic of querying and filtering JSONField. More about basic django queries - 🤍 More about django filtering - 🤍

Django ORM - Querying a Many-to-Many intermediate model

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04.11.2022

The Django database ORM course provides learners with a complete overview of the Django Framework ORM (Object-relational mapping) through applied learning. In this course, you’ll learn about the features of Django ORM and SQL. By better understanding the features of the Django ORM, you will learn how to interact with databases from within a Django project, as you would with SQL. At level 1 you will learn how to administrate tables and perform common Create, Return, Update and Delete (CRUD) operations through the Django ORM. Udemy Course Link: Django Database ORM Mastery Level 1 = 🤍 YouTube Playlist = 🤍 GitHub Code Repository = 🤍

Python Django | Part 4 | Models , ORM Queries on Python Shell | Django Object Relational Mapping

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This tutorial explain in detail how to create Django Models and Relationship. How to write ORM queries on python shell. How to define Foreign Key and Primary Key on Models.

Learn Django - Intro to Django Databases - Basic Queries and functions from the Shell

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Here I take you through the first steps into building queries with Django. We look at using to the shell to run and test administrative commands to administrate our Django database. This will provide us a base to move into more advanced queries. 00:00 Introduction 01:10 Tutorial Coverage 02:46 Python Shell Quick Intro 03:45: (New users) Start a new Django Project - Install Virtual Environment 07:17 SQLite & Why to use the Shell to practice/run Django Queries 09:26 Access the Shell via Django manage.py 11:20 Using os.system CLS to clear the shell screen 13:38 Building a simple database model = Database Queries = 14:37 Display all data from a table/model 23:55 Adding data to a database table/model 26:19 Object to string representation 30:00 Building a custom Model Manager 35:58 Query and return a single item 37:55 Query filter() 39:34 Chain filters() 40:28 Exclude() 42:00 Order_by() 44:00 Delete single items 45:40 Using Django Web DB Administration feature SUBSCRIBE to get more free tutorials, courses and code snippets! 🤍 Follow us on Facebook 🤍 Follow use on Twitter: 🤍

47 - Model Managers & Custom QuerySets for Search - Python & Django 3.2 Tutorial Series

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47 - Model Managers & Custom QuerySets for Search - Python & Django 3.2 Tutorial Series Try Django 3.2 is a series to teach you the fundamentals of creating web applications with Python & Django by building a real project step-by-step. ⦿ Playlist: 🤍 ⦿ DigitalOcean $100 Promo: 🤍 ⦿ Code: 🤍 ⦿ Subscribe: 🤍 ⦿ Setup Video for Python 3 & Django 3: 🤍

Django Full Course - 5 - Performing raw SQL queries

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In this lesson we will cover the topic of performing raw SQL queries - Executing queries with raw() manager method; - Executing queries using connection.cursor(). More about basic django queries - 🤍

Django ORM - Select and Output individual fields example

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The Django ORM series covers a range of common functions that you will perform on a database with Django. In this tutorial we take a look at how to select individual fields from a database and output the data onto a template. 00:00 Introduction Code Repository 6 🤍 ✨ Support us - join us as a very academy member 🤍 👍SUBSCRIBE to get more free tutorials, courses and code snippets! 🤍 👍👍Follow us on Facebook 🤍 👍👍👍Follow use on Twitter: 🤍

Python Django | Getting data through Foreign Key integration | Mastery Tips and Tricks #43

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Hello guys ! In this class i will teach you how to get data through Foreign Key integration. It's an easy path to initiation into the universe of relationships {% block content %} = # Mastery Tips and Tricks #43 In this class we will create a basic system where I will relate two tables. One with PK and the other with FK. We will have 2 select options, one taking the data from models.py (PK) and the other (FK) taking the data directly from admin.py. It is a basic class for beginners, but it is certainly an initial step towards entering the universe of relationships between tables. I hope you like ! = {% endblock content %} {% block speech %} = I recommend you to watch the video at 1.5x or 1.75x speed because my speech is very slow. = {% endblock speech %} {% block thanks %} = Thank you so much guys for watching this video, like the video, subscribe to my channel, leave a comment in the description, share this video and subscribe to help in the growth of this channel. = {% endblock thanks %} {% block support %} = This channel offers 100% free support for queries, code errors, etc. Requirements: 1) You must be subscribed to the channel (I will check) 2) Support is valid only for the class presented in the video. I don't support it if it's different. 3) You shouldn't be on my blacklist (negative or ironic comments posted on my channel) Note: To get the support, first you must comment your request in the video comments for me to check if you are a channel subscriber or not... If so, then you will have my support. After this just contact me by email that is just below here in the description. Just remembering that if you unsubscribe from the channel, you will lose future supports. OK? = {% endblock support %} {% block contact %} = # Email: djangomastery🤍yahoo.com Note: This email is also available for professional hires. = {% endblock contact %} {% block credits %} = # Audio Library Jerrycan - Jeff II 🤍 Creative Commons Attribution Free Download / Stream: 🤍 Music promoted by Audio Library 🤍 = {% endblock credits %}

Custom Model Manager & Model QuerySet in Django | Code Band

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In this video, I'm gonna be discussing about custom model manager and custom model queryset in Django. Model manager and queryset are a great way of customizing model behaviour in Django. We will take a live example and implement it along the video. ~ Code Band Project Repository (Files) : 🤍 Django Manager Docs : 🤍 Django QuerySet Docs : 🤍 Python Tutorial for Beginners Playlist : 🤍 :) You Can Find Me On: My Website - 🤍 Linkedin - 🤍 Github - 🤍 Facebook - 🤍 Twitter - 🤍 Instagram - 🤍

Querying databases [10 of 24] | Django for Beginners

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Django provides a Python interface for you to query your database without having to write SQL queries. You can read, edit, create and delete data all from single Python functions in Python. Useful Links: 🤍 🤍

Advanced Django Queries | Optimize Database Queries | Django Tips#3

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Advanced Django Queries. Optimize Database Queries For Django. Blog - 🤍 Code - 🤍 Video Contributed by Apoorv Garg If you also want to contribute videos on Python, Data Science, Django then send your videos 🤍 professionalcipher🤍gmail.com #DjangoTips

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