Utilizing db.getCollectionNames()

How to List All Collections in the Mongo shell?

When working with MongoDB it’s important to be able to list all collections in a database. This is particularly important for database administrators and developers who need to understand the database’s structure and manage its collections efficiently. Below are the methods that help to list all collections in Mongo shell are as follows:...

1. Using Show Collections

We can easily list all collections in the current database by executing the show collections command in the MongoDB shell....

2. Utilizing db.getCollectionNames()

Another method we can use is db.getCollectionNames(), which returns an array of collection names in the current database....

3. Using db.getCollectionInfos()

Similarly, we can gather detailed information about collections using the db.getCollectionInfos() method....

4. Using db.runCommand()

The db.runCommand() method is used to execute various database commands, including listing collections. The listCollections command retrieves information about collections and views in the current database....

5. Using Show dbs and Show Collections Together

Combining show dbs and show collections commands allows us to list collections across all databases accessible in the MongoDB instance....

Conclusion

Overall, being able to list all collections in MongoDB is essential for effective database management. The methods discussed in this article, such as show collections, db.getCollectionNames(), and db.getCollectionInfos(), provide valuable insights into the database structure and help manage collections efficiently. These methods allow database administrators and developers to easily access and analyze their data, leading to better performance optimization and troubleshooting....