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2. How to order a queryset in case insensitive manner?


Whenever we try to do order_by with some string value, the ordering happens alphabetically and w.r.t case. Like

>>> User.objects.all().order_by('username').values_list('username', flat=True)
<QuerySet ['Billy', 'John', 'Radha', 'Raghu', 'Ricky', 'Ritesh', 'johny', 'johny1', 'paul', 'rishab', 'sharukh', 'sohan', 'yash']>

If we want to order queryset in case insensitive manner, we can do like this .

.. code-block:: ipython
>>> from django.db.models.functions import Lower
>>> User.objects.all().order_by(Lower('username')).values_list('username', flat=True)
<QuerySet ['Billy', 'John', 'johny', 'johny1', 'paul', 'Radha', 'Raghu', 'Ricky', 'rishab', 'Ritesh', 'sharukh', 'sohan', 'yash']>

Alternatively, you can annotate with Lower and then order on annotated field.

).order_by('uname').values_list('username', flat=True)
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