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Multikey Index In Mongodb

This article describes the multikey index in MongoDB.

Purpose

A multikey index is an index that lets you index arrays. This means that if you have documents with arrays as values for certain fields, you can create an index on those fields to enhance query performance when searching for elements within the arrays.

Example

Consider the following collection: -

Picture showing sample document collection in mongodb

To generate the index, we will execute the following query: -

Picture showing the output of multikey index in mongodb

Posted By -	Karan Gupta

Posted On -	Friday, May 3, 2024

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