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How to retrieve only one document from a MongoDB collection
For a full overview of MongoDB and all my posts on it, check out my overview.
MongoDB has a convenient method called
findOne which is very similar to the find method, except it, returns the actual document instead of a cursor and it will only return the first document. If you need to return multiple documents from a query, you'll have to stick to the find or findMany methods for now.If we have the documents shown here in a collection called
users:{
"name": "John Doe",
"email": "[email protected]",
"admin": false
},
{
"name": "Jane Doe",
"email": "[email protected]",
"admin": true
},
{
"name": "Bob Doe",
"email": "[email protected]",
"admin": true
}If we run the following command in MongoDB:
db.users.findOne()It will return the first document in the
users collection, since we're not specifying any filters.{
"name": "John Doe",
"email": "[email protected]",
"admin": false
}If we specify that we want only the
admin users:db.users.findOne({admin: true})Even though two users satisfy that filter, we will only get
Jane Doe since she is the first document that matches the filter.{
"name": "Jane Doe",
"email": "[email protected]",
"admin": true
}25