when using itMongoDBYou may need to delete all items from the collection.
You can calldeleteManyThe collection method, passing an empty object.
like this:
yourcollection.deleteMany({})
This is a complete 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’)
<span style="color:#a6e22e">jobs</span>.<span style="color:#a6e22e">deleteMany</span>({})
}
)
More database tutorials:
- MongoDB basic tutorial
- How is MongoDB different from SQL database
- Information system, data and information
- Data model
- Introduction to ER data model
- Relational model
- Relational algebra
- relational database
- What is a database? There is also a DBMS?
- Introduction to SQL
- How to install PostgreSQL on macOS
- Do you always need to provide a database for the application?
- 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 use PostgreSQL to list the tables in the current database
- How to install MySQL on macOS
- Create user on MySQL
- PostgreSQL vs MySQL, comparison
- SQLite user permissions
- MySQL user permissions
- SQL, create table
- SQL, add data to the table
- SQL, how to use SELECT
- SQL, handle empty cells
- SQL, unique key and primary key
- SQL, how to update data
- SQL, how to update the table structure
- SQL, how to delete data and tables
- SQL connection
- SQL view
- How to insert multiple items in a MongoDB collection at once
- How to delete all items from MongoDB collection