To see what SQL the command is executing:
from django.db import connection
MODEL.objects.latest()
connection.queries
This shows what latest is doing in SQL
When you get a query back, then you can look at it with sql_with_params
MODEL.objects.filter(created_by__username="fred").query.sql_with_params()
The Django Debug Toolbar is useful to look at the SQL queries and how many times things are duplicated.
quantifiedcoding 