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

Use queryset's extra() method:

students.objects.filter(student_id__contains="97318") \
                .extra({'stident_id_uint': "CAST(student_id as UNSIGNED)"}) \
                .order_by('-student_id_uint')