What is eager loading in Flask-SQLAlchemy?
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What is eager loading in Flask-SQLAlchemy?
Eager loading is a technique used to load related data from the database in a single query, reducing the number of queries needed.
How do I implement eager loading in my Flask app?
You can implement eager loading using the joinedload or subqueryload options in your query. For example: query.options(joinedload(Model.related)).
What are the benefits of using eager loading?
The main benefits are improved performance by reducing the number of database queries and avoiding the N+1 query problem.
Can you give me an example of eager loading in code?
Sure! Here's a simple example:
from sqlalchemy.orm import joinedload
query = session.query(Parent).options(joinedload(Parent.children)).all()
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