How does the PostgreSQL optimizer treat CTE materialization boundaries (Postgres 12+)?

It always materializes CTEs, blocking index scans.

By default, it allows the planner to inline CTEs, optimizing filters across the CTE boundary unless NOT MATERIALIZED is specified.

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QUESTION 01 OF 02

CTEs vs Views vs Subqueries

Quiz for lesson: CTEs vs Views vs Subqueries

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When is a CTE preferred over a database View?

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This interactive assessment is designed to test your understanding of CTEs vs Views vs Subqueries. Whether you are a beginner looking to grasp the basics or an experienced professional aiming to refine your skills, quizzes are an excellent way to validate your knowledge and identify areas for improvement.

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