[Solved] What is the main benefit of using a WITH clause (CTE) instead of a nested subquery in SQL? — Ans: It makes the query easier to read and maintain by naming parts of the query. | SQL

SQL - Common Table Expressions (CTEs)

What is the main benefit of using a WITH clause (CTE) instead of a nested subquery in SQL?

AIt always runs faster than nested subqueries.

BIt makes the query easier to read and maintain by naming parts of the query.

CIt removes the need for any JOIN operations.

DIt automatically indexes the tables used in the query.

Step-by-Step Solution

Solution:

Step 1: Understand the purpose of CTEs
CTEs (Common Table Expressions) allow you to name a subquery, making the SQL easier to read and organize.
Step 2: Compare with nested subqueries
Nested subqueries can be hard to read because they are embedded inside other queries without a clear name.
Final Answer:
It makes the query easier to read and maintain by naming parts of the query. -> Option B
Quick Check:
CTEs improve readability = A [OK]

Quick Trick: CTEs name subqueries for clarity and maintenance [OK]

Common Mistakes:

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What is the main benefit of using a WITH clause (CTE) instead of a nested subquery in SQL?