Ticket #36632: models_3.py

from django.db.models import Model, IntegerField, Index

class MyModel(Model):
    a = IntegerField()
    b = IntegerField()
    c = IntegerField(default=0)

    class Meta:
        indexes = (
            Index(fields=('a', 'b')),
            Index(fields=('a', 'b', 'c'))
        )