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what is queryset in django

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Evil Eel answered on April 26, 2021 Popularity 10/10 Helpfulness 2/10

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what is queryset in django

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what is queryset in django?

A QuerySet represents a collection of objects from your database. 
It can have zero, one or many filters. 
Filters narrow down the query results based on the given parameters. 
In SQL terms, a QuerySet equates to a SELECT statement, and a filter is a limiting clause such as WHERE or LIMIT.

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Contributed on Apr 26 2021

Evil Eel

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Model.objects.filter(x=1) & Model.objects.filter(y=2)
Model.objects.filter(x=1, y=2)
from django.db.models import Q
Model.objects.filter(Q(x=1) & Q(y=2))

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Source: docs.djangoproject.com

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Contributed on Aug 09 2022

Emilio Ferreyra

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queryset django

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def get_object(self, id):
    try:
        return UniversityDetails.objects.get(email__exact=email)
    except UniversityDetails.DoesNotExist:
        return False

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Source: stackoverflow.com

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Contributed on Aug 09 2022

João Victor Amora Feitosa Neri

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django __in queryset

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#SQL equivalents:

SELECT ... WHERE id IN (1, 3, 4);
SELECT ... WHERE headline IN ('a', 'b', 'c');
#You can also use a queryset to dynamically evaluate the list of values instead of providing a list of literal values:
inner_qs = Blog.objects.filter(name__contains='Cheddar')
entries = Entry.objects.filter(blog__in=inner_qs)

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Source: docs.djangoproject.com

Tags: django dj

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Contributed on Sep 20 2021

Hero

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what is queryset in django

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