SQL Indexing

This quiz explores SQL indexing, including filtered indexes, composite index performance, and unexpected behaviors during heavy write operations.

This code quiz has 13 questions. Each question includes an explanation so you learn as you go.

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Question 1

Under what circumstances would a filtered index oversimplification lead to a problem when index-based query optimizations are assumed?

Question 2

What happens to the performance when a composite index covering (A, B) is queried with conditions only on B?

Question 3

Given a database with automatic index management, what unexpected behavior might occur during heavy write operations?

Question 4

Why might a clustered index on an ever-growing integer column like an ID be a mistake in a system frequently using complex reads and writes?

Question 5

In a system heavily using INSERT statements, which index strategy could be suboptimal despite speeding up specific SELECTs?

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