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MongoDB query to remove a specific document
To remove a specific document, use remove() in MongoDB. Let us create a collection with documents −
> db.demo56.insertOne({"Name":"Chris"}); { "acknowledged" : true, "insertedId" : ObjectId("5e272e0bcfb11e5c34d89917") } > db.demo56.insertOne({"Name":"David"}); { "acknowledged" : true, "insertedId" : ObjectId("5e272e10cfb11e5c34d89918") } > db.demo56.insertOne({"Name":"Bob"}); { "acknowledged" : true, "insertedId" : ObjectId("5e272e13cfb11e5c34d89919") }
Display all documents from a collection with the help of find() method −
> db.demo56.find();
This will produce the following output −
{ "_id" : ObjectId("5e272e0bcfb11e5c34d89917"), "Name" : "Chris" } { "_id" : ObjectId("5e272e10cfb11e5c34d89918"), "Name" : "David" } { "_id" : ObjectId("5e272e13cfb11e5c34d89919"), "Name" : "Bob" }
Following is the query to remove a specific document −
> db.demo56.remove({_id:ObjectId("5e272e10cfb11e5c34d89918")}); WriteResult({ "nRemoved" : 1 })
Display all documents from a collection with the help of find() method −
> db.demo56.find();
This will produce the following output −
{ "_id" : ObjectId("5e272e0bcfb11e5c34d89917"), "Name" : "Chris" } { "_id" : ObjectId("5e272e13cfb11e5c34d89919"), "Name" : "Bob" }
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