Question

I want to list all the collection, created under my database. I know the query

db.getCollectionNames();

But it listing only – [ “system.indexes”, “system.users” ]

I tried

show collections

it listed following – system.indexes, system.users

It is not showing me my collections. How can i see all my collections ?

Answer 1

To see all the collections in the current database using the mongo shell:

• db.getCollectionNames() returns the collections in the current database as a JavaScript array
• show collections prints the collections in the current database as a list

If you aren’t seeing the expected collections, you can check the current database with:

db.getName()

If you want to see all collections in all databases, here’s some JavaScript that should do the trick:

db.adminCommand("listDatabases").databases.forEach(function (d) {
    sdb = db.getSiblingDB(d.name);
    print("Collections in database: "+d.name);
    printjson(sdb.getCollectionNames())
    print("")
})