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2015/10/6 -Just add another .options(...) with a new relationship path: q = ( session .query(A) .options(joinedload(A.b).joinedload(B.c)) ...
SQLAlchemy now has a much simpler way to do this, by allowing WHERE criteria to be added directly to loader options such as joinedload() and selectinload() ...
Each of joinedload() , subqueryload() , lazyload() , selectinload() , noload() , and raiseload() can be used to set the default style of relationship() loading ...
2025/8/5 -To avoid this N+1 query problem, it's recommended to use selectinload or joinedload , which eagerly load related data more efficiently.
2023/5/5 -Yes. joinedload would make only one query, where selectinload makes multiple queries. So, use selectinload in the endpoints you don't expect lot ...
2026/10/6 -SQLAlchemy 2.1.0 and 2.1.1 have a regression where selectinload() ignores extra conditions on some many-to-many relationships and loads rows ...
2025/4/3 -When to Use selectinload() : When you want to avoid duplicate rows. When you are fine with executing multiple queries to load the related data.
2025/7/23 -The selectinload() method allows you to load related objects in a separate SELECT statement rather than joining them with the main query. This ...
2024/6/12 -I am implementing some API that requires Group Based/R.B.A.C type of permission system for access rights. I have a working function that takes ...
2026/5/11 -Lazy loading fires a query every time you access an unloaded relationship - fine in isolation, catastrophic in a loop. · selectinload adds one ...