Which of the following is the correct syntax to apply a limit of 20 records in a Flask SQLAlchemy query?

easy📝 Syntax Q3 of 15

Flask - Performance Optimization

AUser.query.all().limit(20)

BUser.query.filter(limit=20).all()

CUser.limit(20).query.all()

DUser.query.limit(20).all()

Step-by-Step Solution

Solution:

Step 1: Recall the correct method chaining
In Flask SQLAlchemy, limit() is called on the query object before all() to restrict results.
Step 2: Identify incorrect syntax
Options A, C, and D misuse method order or parameters.
Final Answer:
User.query.limit(20).all() -> Option D
Quick Check:
Limit before all() = B [OK]

Quick Trick: Call limit() before all() to restrict query results [OK]

Common Mistakes:

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