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How to drop a collection in MongoDB?
To drop a collection in MongoDB, you need to use drop() command. The syntax is as follows:
db.yourCollectionName.drop();
The above syntax returns true or false. It returns true if the collection is dropped successfully otherwise false.
Let us first display all collection names from MongoDB. Here, we have a database ‘sample’ that contains some collections. First you need to switch to the ‘sample’ database. The query is as follows:
> use sample; switched to db sample
Now display all collection names with the help of show command. The query is as follows:
> show collections;
The following is the output:
bookInformation userInformation
Above, you can see we have the following two collections:
bookInformation
userInformation
Now let us drop the collection name ‘bookInformation’. The query is as follows:
> db.bookInformation.drop();
The following is the output displaying true:
true
The result true specify that we have dropped the collection successfully. Now you can display all the collection names with the help of show command to verify. The query is as follows:
> show collections;
The following is the output:
userInformation
Look at the above sample output, there is no collection with the name ‘bookInformation.’
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