Updated on 2025-09-04 GMT+08:00

Scenario Overview

Usage Scenarios

When you query large tables with over a million data records, not having indexes or having overly simple indexes can lead to slow query performance. To enhance efficiency, it is advisable to create appropriate indexes. This best practice primarily compares the performance of querying such a large table with indexes to one without indexes, as well as evaluates the effectiveness of single-column indexes versus composite indexes.

Requirements and Objectives

Create appropriate indexes to prevent full table scans and enhance query efficiency.