Django ORM – .exclude Q vs exclude(ids_in=ids) with Subquery, annotate
Django Queryset exclude() not working as expected with Q expressions I’m trying to exclude some Project objects from my queryset using two different methods: one based on IDs and the other using a Q expression on annotated data. However, I’m getting different results from each approach, and I can’t figure out why. The version with […]
Django ORM: Use an annotation’s alias in subsequent annotations
I want to reuse an annotation’s alias in subsequent expressions. How can I make Django generate SQL like the following:
Django: count duoble nested revers Foreignkey
my models:
Django automatic conversion/casting when doing lookups
Could someone explain to me where I can find information about why this works in Django? I did some research in the official documentation and couldn’t find anything.
Ordered Many-To-Many Custom Through Table, Now Field Has Duplicates
As the title indicates, when I try to order by my custom through table, the field now shows duplicates. It seems to be doing a left outer join, displaying all fields on both sides instead of showing only unique values, and distinct() seems to do nothing here. I’m using sqlite3 and distinct(‘field-name’) isn’t supported with sqlite3. Here’s a dumbed-down summary of my code, showing only relevant fields:
Use the Django ORM to do a left outer join between unrelated models?
Suppose I have two models: