MongoDB Show all contents from all collections

Question

Is it possible to show all collections and its contents in MongoDB?

Is the only way to show one by one?

Answer 1

I prefer another approach if you are using mongo shell:

First as the another answers: use my_database_name then:

db.getCollectionNames().map( (name) => ({[name]: db[name].find().toArray().length}) )

This query will show you something like this:

[
        {
                "agreements" : 60
        },
        {
                "libraries" : 45
        },
        {
                "templates" : 9
        },
        {
                "users" : 19
        }
]

You can use similar approach with db.getCollectionInfos() it is pretty useful if you have so much data & helpful as well.