Use $nin operator along with $elemMatch and $not for this. To understand the concept, let us create a collection with the document. The query to create a collection with a document is as follows −
> db.combinationOfArrayDemo.insertOne({"StudentName":"Larry","StudentAge":21,"StudentFavouriteTechnicalSubject":["C","Java"]}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f77cc8d10a061296a3c58") } > db.combinationOfArrayDemo.insertOne({"StudentName":"Mike","StudentAge":23,"StudentFavouriteTechnicalSubject":["C++","Java"]}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f77dc8d10a061296a3c59") } > db.combinationOfArrayDemo.insertOne({"StudentName":"David","StudentAge":22,"StudentFavouriteTechnicalSubject":["Java"]}); { "acknowledged" : true, "insertedId" : ObjectId("5c7f77f48d10a061296a3c5a") }
Display all documents from a collection with the help of find() method. The query is as follows −
> db.combinationOfArrayDemo.find().pretty();
The following is the output −
{ "_id" : ObjectId("5c7f77cc8d10a061296a3c58"), "StudentName" : "Larry", "StudentAge" : 21, "StudentFavouriteTechnicalSubject" : [ "C", "Java" ] } { "_id" : ObjectId("5c7f77dc8d10a061296a3c59"), "StudentName" : "Mike", "StudentAge" : 23, "StudentFavouriteTechnicalSubject" : [ "C++", "Java" ] } { "_id" : ObjectId("5c7f77f48d10a061296a3c5a"), "StudentName" : "David", "StudentAge" : 22, "StudentFavouriteTechnicalSubject" : [ "Java" ] }
Here is the query for matching an array field that contains any combination of the provided array in MongoDB −
> db.combinationOfArrayDemo.find({StudentFavouriteTechnicalSubject: {$not: {$elemMatch: {$nin: ['C++', 'Java']}}}}).pretty();
The following is the output −
{ "_id" : ObjectId("5c7f77dc8d10a061296a3c59"), "StudentName" : "Mike", "StudentAge" : 23, "StudentFavouriteTechnicalSubject" : [ "C++", "Java" ] } { "_id" : ObjectId("5c7f77f48d10a061296a3c5a"), "StudentName" : "David", "StudentAge" : 22, "StudentFavouriteTechnicalSubject" : [ "Java" ] }