To remove the _id element, you can use the following syntax −
db.yourCollectionName.find({},{'_id': false}).pretty();
To understand the above syntax, let us create a collection with the document. The query to create a collection with a document is as follows −
> db.removingidElementDemo.insertOne({"UserName":"John", ... "UserAge":21}); { "acknowledged" : true, "insertedId" : ObjectId("5c9153fd4afe5c1d2279d6ad") } > db.removingidElementDemo.insertOne({"UserName":"Carol", "UserAge":24}); { "acknowledged" : true, "insertedId" : ObjectId("5c9154084afe5c1d2279d6ae") } > db.removingidElementDemo.insertOne({"UserName":"David", "UserAge":22}); { "acknowledged" : true, "insertedId" : ObjectId("5c9154154afe5c1d2279d6af") } > db.removingidElementDemo.insertOne({"UserName":"Mike", "UserAge":26}); { "acknowledged" : true, "insertedId" : ObjectId("5c9154204afe5c1d2279d6b0") } > db.removingidElementDemo.insertOne({"UserName":"Chris", "UserAge":20}); { "acknowledged" : true, "insertedId" : ObjectId("5c91542c4afe5c1d2279d6b1") }
Display all documents from a collection with the help of find() method. The query is as follows −
> db.removingidElementDemo.find().pretty();
The following is the output −
{ "_id" : ObjectId("5c9153fd4afe5c1d2279d6ad"), "UserName" : "John", "UserAge" : 21 } { "_id" : ObjectId("5c9154084afe5c1d2279d6ae"), "UserName" : "Carol", "UserAge" : 24 } { "_id" : ObjectId("5c9154154afe5c1d2279d6af"), "UserName" : "David", "UserAge" : 22 } { "_id" : ObjectId("5c9154204afe5c1d2279d6b0"), "UserName" : "Mike", "UserAge" : 26 } { "_id" : ObjectId("5c91542c4afe5c1d2279d6b1"), "UserName" : "Chris", "UserAge" : 20 }
Here is the query to remove an _id element from PyMongo −
> db.removingidElementDemo.find({},{'_id': false}).pretty();
The following is the output in which you cannot see the _id element since we have removed it −
{ "UserName" : "John", "UserAge" : 21 } { "UserName" : "Carol", "UserAge" : 24 } { "UserName" : "David", "UserAge" : 22 } { "UserName" : "Mike", "UserAge" : 26 } { "UserName" : "Chris", "UserAge" : 20 }