[Solved] What is the effect of using lazy='dynamic' in a Flask-SQLAlchemy relationship? — Ans: Returns a query object instead of a list, allowing further filtering. | Flask

Flask - Performance Optimization

What is the effect of using lazy='dynamic' in a Flask-SQLAlchemy relationship?

AReturns a query object instead of a list, allowing further filtering.

BLoads all related objects immediately with the parent.

CPrevents loading related objects entirely.

DLoads related objects only when accessed, using a join.

Step-by-Step Solution

Solution:

Step 1: Understand lazy='dynamic'
This option returns a query object instead of a list, so you can filter or paginate before loading.
Step 2: Compare with other lazy options
It differs from lazy='select' which loads a list, and lazy='joined' which loads immediately.
Final Answer:
Returns a query object instead of a list, allowing further filtering. -> Option A
Quick Check:
lazy='dynamic' returns query object [OK]

Quick Trick: lazy='dynamic' gives query for filtering before loading [OK]

Common Mistakes:

MISTAKES

Master "Performance Optimization" in Flask

9 interactive learning modes - each teaches the same concept differently

More Flask Quizzes

What is the effect of using lazy='dynamic' in a Flask-SQLAlchemy relationship?