In MongoDB, you can update an object by using the update()
or updateOne()
method. To update an object with a specific key match, you can use the $set
operator in the update query. The $set
operator updates a particular field with a new value.
For example, if you have a collection named "users" with documents that look like this:
{
_id: ObjectId("1234567890"),
name: "John Doe",
age: 30,
email: "johndoe@example.com"
}
And you want to update the email address of the user with the name "John Doe", you can use the following code:
db.users.updateOne(
{ name: "John Doe" },
{ $set: { email: "newemail@example.com" } }
)
This query searches for a document with the name "John Doe" and updates the email field with the new value "newemail@example.com". If multiple documents match the query, only the first document will be updated. You can use update()
for updating multiple documents that match the query.
Please start posting anonymously - your entry will be published after you log in or create a new account. This space is reserved only for answers. If you would like to engage in a discussion, please instead post a comment under the question or an answer that you would like to discuss
Asked: 2023-05-06 16:33:59 +0000
Seen: 10 times
Last updated: May 06 '23
How do you log Python data into a database?
Is it possible to query a unique index directly instead of querying a collection in MongoDB?
What is the process of integrating API data into MongoDB using Spark/Python?
Please help me with connecting my MongoDB to my JS file as I am struggling to do so.
How can additional fields that have been transformed be queried in MongoDB?