MongoDB: How to Find Document By id

You can use the following basic syntax to find a document by id in MongoDB:

db.collection.find(ObjectId('619527e467d6742f66749b72'))

The following examples show how to use this syntax with a collection teams with the following documents:

{ _id: ObjectId("619527e467d6742f66749b70"),
  team: 'Rockets',
  position: 'Center',
  points: 19 }

{ _id: ObjectId("619527e467d6742f66749b71"),
  team: 'Rockets',
  position: 'Forward',
  points: 26 }

{ _id: ObjectId("619527e467d6742f66749b72"),
  team: 'Cavs',
  position: 'Guard',
  points: 33 }

Example: Find Document by id

We can use the following code to find the document with a specific id in the teams collection:

db.teams.find(ObjectId('619527e467d6742f66749b72'))

This query returns the following document:

{ _id: ObjectId("619527e467d6742f66749b72"),
  team: 'Cavs',
  position: 'Guard',
  points: 33 }

We can change the id to find another document with a different id in the teams collection:

db.teams.find(ObjectId('619527e467d6742f66749b71'))

This query returns the following document:

{ _id: ObjectId("619527e467d6742f66749b71"),
  team: 'Rockets',
  position: 'Forward',
  points: 26 }

Note that if you query for a certain document with an id that doesn’t exist, no results will be returned.

Additional Resources

The following tutorials explain how to perform other common operations in MongoDB:

MongoDB: How to Add a New Field in a Collection
MongoDB: How to Group By and Count
MongoDB: How to Group By Multiple Fields