django multi column index

To create a multi-column index in Django, follow these steps:

1. Open the models.py file in your Django project.
2. Locate the model for which you want to create the multi-column index.
3. Within the model class, add a Meta inner class if it doesn't exist already.
4. Inside the Meta class, add an indexes attribute.
5. Inside the indexes attribute, define a list of Index objects, each representing a column or set of columns in the index.
6. For each Index object, set the fields attribute to a list of the field names you want to include in the index.
7. Optionally, set the name attribute to specify a custom name for the index.
8. Optionally, set the unique attribute to True if you want to create a unique index.
9. Optionally, set the db_tablespace attribute to specify a custom tablespace for the index.
10. Save the changes to the models.py file.

By following these steps, you can create a multi-column index in Django to improve the performance of your database queries.