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MongoDB Delete Collection

In this chapter, we will introduce how to use MongoDB to delete a collection.

MongoDB uses the drop() method to delete a collection.

The drop() method can permanently delete the specified collection and all its documents from the database. This is an irreversible operation, so it should be used with caution.

Syntax Format:

db.collection.drop()

Parameter Description:

None

Return Value

If the selected collection is successfully deleted, the drop() method returns true, otherwise it returns false.

Example

In the database mydb, we can first view the existing collections using the show collections command:

> use mydb
switched to db mydb
> show collections
mycol
mycol2
system.indexes

>

Next, delete the collection mycol2:

> db.mycol2.drop()
true
>

View the collections in database mydb again using show collections:

> show collections
mycol
system.indexes

>

From the results, it can be seen that the mycol2 collection has been deleted.

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Mongodb Delete Collection