[Solved] What does a nested subquery in SQL do? — Ans: Runs a query inside another query to filter or compare data | SQL

SQL - Subqueries

What does a nested subquery in SQL do?

ARuns a query inside another query to filter or compare data

BCreates a new table from existing data

CDeletes data from multiple tables at once

DUpdates all rows in a table without conditions

Step-by-Step Solution

Solution:

Step 1: Understand the concept of nested subqueries
A nested subquery is a query inside another query that runs first to provide data for the outer query.
Step 2: Identify the correct description
Runs a query inside another query to filter or compare data correctly describes this behavior as running a query inside another to filter or compare data.
Final Answer:
Runs a query inside another query to filter or compare data -> Option A
Quick Check:
Nested subquery = query inside query [OK]

Quick Trick: Nested means one query inside another [OK]

Common Mistakes:

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What does a nested subquery in SQL do?