Can't find user by name with MongoDB?

To find a user by name in MongoDB, use the find() method with a query document that specifies the name field and its value. This performs an exact match search on the specified field.

Syntax

db.collection.find({"fieldName": "value"});

Create Sample Data

Let us create a collection with user documents ?

db.demo504.insertMany([
    {"Name": "Chris"},
    {"Name": "John"},
    {"Name": "David"}
]);

{
    "acknowledged": true,
    "insertedIds": [
        ObjectId("5e8823ee987b6e0e9d18f570"),
        ObjectId("5e8823f2987b6e0e9d18f571"),
        ObjectId("5e8823f5987b6e0e9d18f572")
    ]
}

Display All Documents

db.demo504.find();

{ "_id": ObjectId("5e8823ee987b6e0e9d18f570"), "Name": "Chris" }
{ "_id": ObjectId("5e8823f2987b6e0e9d18f571"), "Name": "John" }
{ "_id": ObjectId("5e8823f5987b6e0e9d18f572"), "Name": "David" }

Find User by Name

Following is the query to find a user by name ?

db.demo504.find({"Name": "John"});

{ "_id": ObjectId("5e8823f2987b6e0e9d18f571"), "Name": "John" }

Case-Insensitive Search

For case-insensitive name searches, use regular expressions ?

db.demo504.find({"Name": /^john$/i});

{ "_id": ObjectId("5e8823f2987b6e0e9d18f571"), "Name": "John" }

Conclusion

Use find({"Name": "value"}) for exact name matches in MongoDB. For case-insensitive searches, employ regular expressions with the i flag to match names regardless of capitalization.