How to Perform NOT Queries in Django ORM

"In Django, performing NOT queries allows you to exclude certain records from the query results based on specific conditions. The NOT operator, represented by the tilde (~) when used in conjunction with the Django ORM's Q object, helps you construct complex queries with ease. In this article, we will explore how to perform NOT queries in Django ORM, enabling you to filter out data that does not meet specific criteria."

"The NOT operator (~) in Django is used to negate conditions specified within a query. It works with the Q object, which allows you to encapsulate complex queries using Pythonic syntax. The NOT operator is particularly useful when you want to exclude certain records that do not satisfy specific conditions from the query results."

"To perform NOT queries in Django ORM, you need to import the Q object from django.db.models and then use the ~ operator to negate a condition. The general syntax is as follows: from django.db.models import Q result = Model.objects.filter(~Q(condition)) In this syntax, condition represents the condition you want to negate. The ~ operator, when applied to the Q object, inverts the logic of the condition, effectively performing a NOT operation."

The tilde (~) operator negates conditions in Django ORM when used with Q objects to exclude matching records. Q objects enable encapsulation of complex query logic using Pythonic expressions. Negation with ~ inverts the specified condition, allowing retrieval of records that do not meet a given criterion. Typical usage requires importing Q from django.db.models and applying ~Q(condition) inside filter() or exclude() calls. For example, filtering books with ~Q(is_out_of_stock=True) returns books that are not out of stock. The NOT operator can be combined with other Q objects and filters to build complex conditional queries.

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