Fetch specific multiple documents in MongoDB

To fetch specific multiple documents in MongoDB, use $in. Let us create a collection with documents −

> db.demo593.insertOne({id:1,"Name":"Chris"});{
   "acknowledged" : true, "insertedId" : ObjectId("5e93177dfd2d90c177b5bcd9")
}
> db.demo593.insertOne({id:2,"Name":"John"});{
   "acknowledged" : true, "insertedId" : ObjectId("5e931785fd2d90c177b5bcda")
}
> db.demo593.insertOne({id:3,"Name":"Bob"});{
   "acknowledged" : true, "insertedId" : ObjectId("5e93178cfd2d90c177b5bcdb")
}
> db.demo593.insertOne({id:4,"Name":"Sam"});{
   "acknowledged" : true, "insertedId" : ObjectId("5e931792fd2d90c177b5bcdc")
}

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

> db.demo593.find();

This will produce the following output −

{ "_id" : ObjectId("5e93177dfd2d90c177b5bcd9"), "id" : 1, "Name" : "Chris" }
{ "_id" : ObjectId("5e931785fd2d90c177b5bcda"), "id" : 2, "Name" : "John" }
{ "_id" : ObjectId("5e93178cfd2d90c177b5bcdb"), "id" : 3, "Name" : "Bob" }
{ "_id" : ObjectId("5e931792fd2d90c177b5bcdc"), "id" : 4, "Name" : "Sam" }

Following is the query to fetch specific multiple documents −

> db.demo593.find({id:{$in:[1,3]}});

This will produce the following output −

{ "_id" : ObjectId("5e93177dfd2d90c177b5bcd9"), "id" : 1, "Name" : "Chris" }
{ "_id" : ObjectId("5e93178cfd2d90c177b5bcdb"), "id" : 3, "Name" : "Bob" }

AmitDiwan

Published on 15-May-2020 06:55:54

• Related Questions & Answers
• Fetch multiple documents in MongoDB query with OR condition?
• MongoDB aggregation to fetch documents with specific field value?
• MongoDB compound conditions to fetch documents?
• Fetch specific documents with array values in MongoD
• Fetch specific field values in MongoDB
• MongoDB filter multiple sub-documents?
• MongoDB query to implement nor query to fetch documents except a specific document
• Fetch all the ids of MongoDB documents?
• MongoDB to fetch documents with $or Operator
• Search for multiple documents in MongoDB?
• Match MongoDB documents with field value greater than a specific number and fetch them?
• MongoDB query to add multiple documents
• How to update multiple documents in MongoDB?
• How to merge multiple documents in MongoDB?
• MongoDB query to fetch a specific document rom documents with field value set using NumberInt()?