Remove only one document in MongoDB - mongodb

Question

when I call
db.collection.remove({'condition':'some condition'});
This one line will delete all the matching condition documents.
What If I want to remove only one of any or n-th matching condition?

Answer 1

You need to perform two separate queries for this
take only one item from the matching filters
var item = db.collection.findOne({'condition':'some condition'})
and delete the item by using the id
db.collection.remove({_id: item._id});

Answer 2

db.collection.remove now has a justOne flag
http://docs.mongodb.org/manual/reference/method/db.collection.remove/#db.collection.remove

Answer 3

If there are multiple records and you want to delete only first record, then set justOne parameter in remove() method.
Here, you want to delete only 1. Thus, set "justOne" parameter as 1.
db.collection.remove({'condition':'some condition'},1);

Answer 4

To remove one document from collection use the bellow command
db.collectionname.remove({"_id": ObjectId("5473293d43ecdre56352457f3a")})

Answer 5

According to MongoDB db.collection.remove() reference:
justOne
An optional boolean value. To limit the deletion to just one document, set to true. Omit to use the default value of false and delete all documents matching the deletion criteria.
You can set the justOne to true, in order to do it.
Before MongoDB version 2.6:
db.collection.remove(
<query>,
<justOne>
)
MongoDB version 2.6 or later:
db.collection.remove(
<query>,
{
justOne: <boolean>,
writeConcern: <document>
}
)
Like this: db.collection.remove({"condition": "some condition"}, {justOne: true});.

Answer 6

I used this and it's worked for me
db.eventList.remove({"_id":ObjectId("5d9f3bd0c02cef7d50bb97fb")});
this is working on MongoDB shell version: 3.2.17
here eventList ===> collection

Answer 7

Can't you just run a find first to get the id then a delete when you have the one you want?

Answer 8

Try this one for delete.
db.users.deleteOne({"_id": ObjectId("5473293d43ecdre56352457f3a")});

Answer 9

For example the name of the db is 'abc' and under that there's a collection by name 'users' and users has an email which is 'test#test.com' which you want to remove:
1. On the terminal if you type 'show dbs' (without quotation' ') it would list all the databases including 'abc'
2. If you type 'use abc', it would switch to your desired db - abc (with the message: "switched to db abc")
3. Now if you type 'show collections', it would show all the collections including 'users'
4. If you want to list all the documents in this collection, you simply type: db.users.find({})
5. If you want to delete a specific document in this collection, type:
db.users.remove({"email":"test#test.com"})
If it's successful, it would display - WriteResult({ "nRemoved" : 1 })