Master Django ORM patterns: QuerySets, select_related, prefetch_related, F/Q objects, annotations, aggregations, and raw SQL safety. Use when the user writes Django database queries, asks about ORM optimization, encounters N+1 queries, or works with complex filtering and aggregation. Trigger when you see inefficient Django queries.
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Django ORM Mastery
Write efficient, expressive Django ORM queries. The ORM is lazy by default -- QuerySets are not evaluated until iterated. Understanding this is key to avoiding N+1 queries and building performant applications.
When to Use
User writes Django model queries
User encounters slow queries or N+1 problems
User needs complex filtering, aggregation, or annotation
User asks about select_related vs prefetch_related
User needs database-level operations without pulling dat
[Description truncada. Veja o README completo no GitHub.]
