[Solved] Which of the following is a valid reason to use a CTE instead of a subquery? — Ans: To reuse the same result set multiple times in a query | SQL

SQL - Common Table Expressions (CTEs)

Which of the following is a valid reason to use a CTE instead of a subquery?

ATo avoid writing any JOIN clauses

BTo automatically create indexes on the result

CTo reuse the same result set multiple times in a query

DTo store data permanently

Step-by-Step Solution

Solution:

Step 1: Identify CTE features
CTEs can be referenced multiple times in the main query, avoiding repeated code.
Step 2: Evaluate options
Only To reuse the same result set multiple times in a query correctly describes a benefit of CTEs; others are incorrect or unrelated.
Final Answer:
To reuse the same result set multiple times in a query -> Option C
Quick Check:
CTE reuse = true [OK]

Quick Trick: Use CTEs to avoid repeating complex subqueries [OK]

Common Mistakes:

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Which of the following is a valid reason to use a CTE instead of a subquery?