Django ORM Filtering ULTIMATE Guide (2026): Master Field Lookups, Q Objects, and Complex Queries скачать в хорошем качестве

Django ORM Filtering ULTIMATE Guide (2026): Master Field Lookups, Q Objects, and Complex Queries

Django ORM Filtering ULTIMATE Guide (2026): Master Field Lookups, Q Objects, and Complex Queries #django #python #orm #webdevelopment #database #coding Stop writing raw SQL and start mastering the Django ORM (Object-Relational Mapper)! 🛠️ In this deep-dive tutorial updated for 2026, we explore how to retrieve exactly the data you need from your database using Pythonic syntax. What You Will Master: Essential Field Lookups: Moving beyond simple equality with __gt (Greater Than), __gte, __lt, __lte, and __in. Text Pattern Matching: Master __contains, __startswith, and __endswith to build powerful search features. Range Filtering: Using __range for inclusive boundary tests (e.g., salary between 15k and 18k). Complex Logical Queries: * OR Logic: Using the | operator and the powerful Q Object. 1. AND Logic: Three distinct ways to chain conditions for precise filtering. 2. NOT Logic: Mastering exclude() and the tilde ~Q negation syntax. Performance Optimization: How to select only required columns to reduce memory overhead. Whether you're filtering an Employee list by salary or searching for specific names, these techniques are the bread and butter of professional Django development. Django ORM filter records Django Q objects tutorial Django filter greater than less than Django ORM startswith endswith Django exclude vs filter NOT Django querysets AND OR queries Django field lookups list Django range filter exampl Python Django database filtering Django select specific columns queryset Django ORM contains vs icontains #django #PythonORM #webdevelopment #backend #DjangoTips #codingtutorial #pythonprogramming #sql #DatabaseFiltering #SoftwareEngineering