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$Elemmatch Operator In MongoDB

In this article, we will discuss the $elemMatch operator in MongoDB.

Purpose

The $elemMatch operator is used to query the array elements.

Consider the following example: -

If you want to query the collection based on the name, the query will be: -

db.authors.find({ "authors": { $elemMatch: { "name": "Jeff" } }})

To query the collection based on the age, the query will be: -

db.authors.find({ "authors": { $elemMatch: { "age": {$lt:30} } }})

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