DS0-001 Data Querying And Analysis Practice Question
An analyst is using a CTE (Common Table Expression) to pre-aggregate sales data before performing a join. What is the primary benefit of using a CTE instead of a subquery in this scenario?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Better readability and recursive capability
CTEs improve readability and maintainability of complex queries by allowing the logic to be defined in a named temporary result set.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Better readability and recursive capability
Why this is correct
CTEs provide logical structure and allow for recursive self-referencing queries.
- ✗
Automatic indexing of the result set
Why it's wrong here
SQL result sets from CTEs are not automatically indexed.
- ✗
Performance is always superior to subqueries
Why it's wrong here
Performance depends on the optimizer; CTEs do not inherently provide a speed advantage.
- ✗
Lower memory consumption during execution
Why it's wrong here
Memory usage is dependent on the result set size, not the syntax choice.
About these practice questions
Courseiva writes every DS0-001 question from scratch — 216 in total, each with an explanation and a wrong-answer breakdown. None are copied from real exams or dumps. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official CompTIA exam blueprint
This DS0-001 practice question is part of Courseiva's free CompTIA certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the DS0-001 exam.