How do you filter documents where an array contains a specific value?

MongoDBJunior~1 min read

To filter documents where an array contains a specific value, use an ordinary comparison against the array field.

Example:

db.users.find({ skills: "MongoDB" })

If a document has an array:

json

{ "name": "Alex", "skills": ["MongoDB", "Node.js"] }

that document will be found, because "MongoDB" is one of the elements of skills.

So: to filter by an array, it's enough to name the field and the value, MongoDB checks on its own whether the array contains that element.

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