Get the last two values with MongoDB

To get the last two values, use MongoDB $slice. Let us create a collection with documents −

> db.demo173.insertOne({"ListOfValues":[10,40,100,560,700,900]});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5e383a4f9e4f06af551997e4")
}

Display all documents from a collection with the help of find() method −

> db.demo173.find().pretty();

This will produce the following output −

{
   "_id" : ObjectId("5e383a4f9e4f06af551997e4"),
   "ListOfValues" : [ 10, 40, 100, 560, 700, 900 ]
}

Following is the query to get the last two values −

> db.demo173.find({}, { "ListOfValues": { "$slice": -2 } } );

This will produce the following output −

{ "_id" : ObjectId("5e383a4f9e4f06af551997e4"), "ListOfValues" : [ 700, 900 ] }

AmitDiwan

Published on 30-Mar-2020 12:56:33

• Related Questions & Answers
• Display the last two values from field with MongoDB
• MongoDB aggregation to get two documents with the least marks
• How to get the last N records in MongoDB?
• Get Distinct Values with Sorted Data in MongoDB?
• Get the length of distinct values in an array with MongoDB
• MongoDB query to get last inserted document?
• Get all the records with two different values in another column with MySQL
• Get the sum of last 3 digits from all the values in a column with MySQL
• Update the last row with search criteria in MongoDB?
• Get distinct record values in MongoDB?
• How to get only values in arrays with MongoDB aggregate?
• Get the duplicate values of a field in MongoDB?
• How to get the max of two values MySQL?
• Get all the MongoDB documents but not the ones with two given criteria’s?
• Query on the last object of an array with MongoDB