如何在 Django 中使用自定义选择创建 QuerySet

Question

I'm working on a project in python I'm kind of a beginner. I searched a bit on the Queryset but didn't found out how to do a custom select query. Here's the raw SQL query :

SELECT
  DATE_FORMAT(
    DATE_ADD(date_and_time, INTERVAL - WEEKDAY(date_and_time) DAY), '%Y-%m-%d'
  ) as Week,
  device_type as 'Type of device',
COUNT(*) as Views FROM manage_history
GROUP BY Week, device_type;

How could I get the values but with a QuerySet ?

Thanks a lot

Answer 1

You can perform a raw sql query. More details at https://docs.djangoproject.com/en/3.0/topics/db/sql/

Answer 2

Django's default manager gives you RawQuerySet :

>>> from api.models import Song
>>> Song.objects.raw('SELECT * FROM api_song')
<RawQuerySet: SELECT * FROM api_song>

In case of that you want exactly QuerySet to be returned, Take a look Here .