How to list all indexes?

Q: How to list all indexes?

db.collectionName.getIndexes(); db.runCommand({ listIndexes: 'collectionName' }); If you are using MongoDB Compass (a graphical user interface for MongoDB), navigate to the collection, and under the 'Indexes' tab, you can view all existing indexes.

Difficulty: 2/10

Index management, MongoDB shell commands, Performance monitoring

To list all indexes in a MongoDB collection, you can use the following methods:

1
db.collectionName.getIndexes();
2
db.runCommand({ listIndexes: 'collectionName' });
3
If you are using MongoDB Compass (a graphical user interface for MongoDB), navigate to the collection, and under the 'Indexes' tab, you can view all existing indexes.

Scenario Questions

0-2 years experience

1You need to verify which indexes exist on the 'users' collection before adding a new one. How would you list all indexes using the Mongo shell?
2If you run db.orders.getIndexes() and see an unexpected index, what steps would you take to confirm its definition?
3How can you list indexes for every collection in a database without writing a separate command for each?

Follow-up Questions