MongoDB Tutorial 0/120 lessons ~6 min read Lesson 62
Single Field Indexes
A single field index covers one field, ascending or descending.
Course progress0%
Focus
2 guided sections
Practice signal
Concept-first lesson
Career prep
Foundation builder
Introduction
A single field index covers one field, ascending or descending. The simplest and most common index — and the right starting point for nearly every query pattern.
Syntax reference
js
db.users.createIndex({ createdAt: -1 });
Ready to mark this lesson complete?Track your journey across the entire course.