---
title: "Composite indexes and column order"
description: "How can you test composite-index column-order effects?"
status: "coming-soon"
language: "en"
canonical: "https://bulnik.dev/en/articles/topics/T40.03/"
topicId: "T40.03"
---

> Coming soon — this article is being prepared. Below are its question, intended outcome, and place in the story.

## The question

How can you test composite-index column-order effects?

## What we will work through

Test composite-index column-order effects.

## Before you begin

Previously covered: B-tree indexes; EXPLAIN and EXPLAIN ANALYZE.

- [B-tree indexes](/en/articles/topics/T40.02/)
- [EXPLAIN and EXPLAIN ANALYZE](/en/articles/topics/T40.01/)