It's sample peaces of code in Django to easily remembers.
- select_related_disable.py with 101 querys for each object
- select_related_enabled.py reduced for 1 query in inner join
- select_related_enabled_defer.py without a specific field
- prefetch_related_disabled.py with 101 querys for each object
- prefetch_related_enabled.py reduced for 2 querys in inner join
- prefetch_related_filtering_disabled.py with 102 querys for each sub object
- prefetch_related_filtering_enabled.py reduced for 2 querys in inner join