How do i cast char to integer while querying in django ORM?

Question

Recently started using Django ORM.I want to execute this query

 select student_id from students where student_id like \"%97318%\" order by CAST(student_id a         


        

Answer 1

An updated alternative without requiring the use of extra is the cast function (new in Django 1.10):

>>> from django.db.models import FloatField
>>> from django.db.models.functions import Cast
>>> Value.objects.create(integer=4)
>>> value = Value.objects.annotate(as_float=Cast('integer', FloatField())).get()> 
>>> print(value.as_float)
4.0

From https://docs.djangoproject.com/en/1.10/ref/models/database-functions/#cast