Perform MongoDB full text search

For full text search in MongoDB, use $text. The $text performs a text search on the content of the fields. Let us create a collection with documents −

> db.demo654.createIndex({Name:"text"});
{
   "createdCollectionAutomatically" : true,
   "numIndexesBefore" : 1,
   "numIndexesAfter" : 2,
   "ok" : 1
}
> db.demo654.insertOne({"Name":"John Doe"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5ea04e924deddd72997713c8")
}
> db.demo654.insertOne({"Name":"Chris Brown"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5ea04e9d4deddd72997713c9")
}
> db.demo654.insertOne({"Name":"John Smith"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5ea04ea54deddd72997713ca")
}
> db.demo654.insertOne({"Name":"David Miller"});
{
   "acknowledged" : true,
   "insertedId" : ObjectId("5ea04eb24deddd72997713cb")
}

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

> db.demo654.find();

This will produce the following output −

{ "_id" : ObjectId("5ea04e924deddd72997713c8"), "Name" : "John Doe" }
{ "_id" : ObjectId("5ea04e9d4deddd72997713c9"), "Name" : "Chris Brown" }
{ "_id" : ObjectId("5ea04ea54deddd72997713ca"), "Name" : "John Smith" }
{ "_id" : ObjectId("5ea04eb24deddd72997713cb"), "Name" : "David Miller" }

Following is the query to perform full text search in MongoDB −

> db.demo654.find({ $text: { $search: "John" } } );

This will produce the following output −

{ "_id" : ObjectId("5ea04ea54deddd72997713ca"), "Name" : "John Smith" }
{ "_id" : ObjectId("5ea04e924deddd72997713c8"), "Name" : "John Doe" }