Learn more about the NodeJS MongoDB findOne method. Our MongoDB Support team is here to help you with your questions and concerns.

About NodeJS MongoDB findOne method

Did you know that the findOne() method in MongoDB helps access a single document from a collection that matches the query criteria?

In fact, it returns the first document that matches the query. If no matching document is found, it returns null.

Let’s take a look at the syntax for the findOne() method:

db.collection.findOne(<query>, <projection>)

Where,

• query:

  This is the query criteria to filter the documents. It uses the MongoDB query syntax.
• projection:

  This is an optional parameter. It refers to fields which will be included or excluded from the returned document. It uses the MongoDB projection syntax.

For instance, here is how to use findOne() method in the MongoDB shell:

db.users.findOne({ name: "David Stellar" })

In the above example, we are retrieving the first document from the user collection where the name field is the same as “David Stellar”.

Our experts would like to point out that the findOne() method is designed for convenience and simplicity when we need to retrieve a single document.

However, if we want to retrieve multiple documents, we can use the find() method with query criteria and projection options.

The findOne() method is available in the MongoDB shell as well as in various MongoDB drivers for different programming languages.

Let us know in the comments if you need further help with the findOne() method.

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Conclusion

In brief, our Support Techs introduced us to the NodeJS MongoDB findOne() method.