---
title: "Discussion on \"3 Costly Django ORM Mistakes I Made as a Beginner — and How I Fixed Them\" | Hashnode"
description: "Discussion on \"3 Costly Django ORM Mistakes I Made as a Beginner — and How I Fixed Them\". Learn from 3 real-world Django ORM mistakes beginners often make—like filtering on dynamic fields, duplicating querysets with ManyToMany, and costly join is"
url: "https://hashnode.com/posts/3-costly-django-orm-mistakes-i-made-as-a-beginner-and-how-i-fixed-them/6877656810350081fe6d5bfa"
---

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# [3 Costly Django ORM Mistakes I Made as a Beginner — and How I Fixed Them](https://codengocool.hashnode.dev/3-costly-django-orm-mistakes-i-made-as-a-beginner-and-how-i-fixed-them?utm_source=hashnode&utm_medium=feed)

Learn from 3 real-world Django ORM mistakes beginners often make—like filtering on dynamic fields, duplicating querysets with ManyToMany, and costly join is

Jul 16, 2025 · 5 min read · codengocool.hashnode.dev  
Updated Jul 21, 2025  
Read the article

-   [#queryset](https://hashnode.com/tag/queryset)
-   [#stringagg](https://hashnode.com/tag/stringagg)
-   [#multiple-joins](https://hashnode.com/tag/multiple-joins)
-   [#django](https://hashnode.com/tag/django)
-   [#django-orm](https://hashnode.com/tag/django-orm)
-   [#concat](https://hashnode.com/tag/concat)
-   [#many-to-many](https://hashnode.com/tag/many-to-many)
-   [#duplicates](https://hashnode.com/tag/duplicates)
-   [#filter](https://hashnode.com/tag/filter)
-   [#listagg](https://hashnode.com/tag/listagg)

## Written by

[Nafisa Alam](https://hashnode.com/@nafisaalam)

@nafisaalam · Bangladesh

  
[View profile](https://hashnode.com/@nafisaalam)

Software Developer @ Penta Ltd.

I really love to develop stuff that solves problems in our everyday life. I am interested in opening an all-female tech supporting platform in Bangladesh. Anyone with the same interest can contact me.

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