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Multikey Index In Mongodb

In this article, we will discuss the multikey index in MongoDB.

Purpose

A multikey index is an index that allows you to 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 improve query performance when querying on elements within the arrays.

Example

Consider the following collection: -

Picture showing sample document collection in mongodb

To create the index, we will use 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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