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When working with MongoDB you might have the need to remove all items from a collection.
You can do so by calling the deleteMany
method of a collection, passing an empty object.
Like this:
yourcollection.deleteMany({})
Here’s a full example:
const mongo = require('mongodb').MongoClient
const url = 'mongodb://localhost:27017'
let db, jobs
mongo.connect(
url,
{
useNewUrlParser: true,
useUnifiedTopology: true
},
(err, client) => {
if (err) {
console.error(err)
return
}
db = client.db('jobs')
jobs = db.collection('jobs')
jobs.deleteMany({})
}
)
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More database tutorials:
- The MongoDB basics tutorial
- How MongoDB is different from a SQL database
- Information systems, data and information
- Data models
- Introduction to the ER Data Model
- The Relational Model
- Relational Algebra
- Relational Databases
- What is a Database? And a DBMS?
- Introduction to SQL
- How to install PostgreSQL on macOS
- Do you always need a database for your app?
- How to install SQLite on macOS
- Introduction to PostgreSQL
- PostgreSQL User Permissions
- How to list all users in PostgreSQL
- How to switch database using PostgreSQL
- How to list all databases using PostgreSQL
- How to list tables in the current database using PostgreSQL
- How to install MySQL on macOS
- Creating a user on MySQL
- PostgreSQL vs MySQL, a comparison
- SQLite User Permissions
- MySQL User Permissions
- SQL, creating a table
- SQL, adding data to a table
- SQL, how to use SELECT
- SQL, Handling empty cells
- SQL, Unique and Primary keys
- SQL, how to update data
- SQL, how to update a table structure
- SQL, how to delete data and tables
- SQL Joins
- SQL Views
- How to insert multiple items at once in a MongoDB collection
- How to remove all items from a MongoDB collection