DEV Community

yaswanthteja
yaswanthteja

Posted on

MongoDb Row commands

#mongodb #beginners #programming #tutorial

In this post, we will see a comprehensive list of all the MongoDB Row commands you will ever need as a MongoDB beginner.

Row(Document) Commands

  • Show all Rows in a Collection 
db.comments.find()
Enter fullscreen mode Exit fullscreen mode
  • Show all Rows in a Collection (Prettified) 
db.comments.find().pretty()
Enter fullscreen mode Exit fullscreen mode
  • Find the first row matching the object 
db.comments.findOne({name: 'yash'})
Enter fullscreen mode Exit fullscreen mode
  • Insert One Row 
db.comments.insert({
    'name': 'yash',
    'lang': 'JavaScript',
    'meme': 1
 })
Enter fullscreen mode Exit fullscreen mode
  • Insert many Rows 
db.comments.insertMany([{
    'name': 'yash',
    'lang': 'JavaScript',
    'meme': 1
    }, 
    {'name': 'Rohan',
    'lang': 'Python',
    'meme': 3
    },
    {'name': 'jagu',
    'lang': 'Java',
    'meme': 4
}])
Enter fullscreen mode Exit fullscreen mode
  • Search in a MongoDb Database 
db.comments.find({lang:'Python'})
Enter fullscreen mode Exit fullscreen mode
  • Limit the number of rows in output 
db.comments.find().limit(2)
Enter fullscreen mode Exit fullscreen mode
  • Count the number of rows in the output 
db.comments.find().count()
Enter fullscreen mode Exit fullscreen mode
  • Update a row 
db.comments.update({name: 'Teja'},
{'name': 'yash',
    'lang': 'JavaScript',
    'meme': 1
}, {upsert: true})
Enter fullscreen mode Exit fullscreen mode
  • Mongodb Increment Operator 
db.comments.update({name: 'Rohan'},
{$inc:{
    meme: 2
}})
Enter fullscreen mode Exit fullscreen mode
  • Mongodb Rename Operator 
db.comments.update({name: 'Rohan'},
{$rename:{
    meme: 'member'
}})
Enter fullscreen mode Exit fullscreen mode
  • Delete Row 
db.comments.remove({name: 'yash'})
Enter fullscreen mode Exit fullscreen mode
  • Less than 
db.comments.find({member_since: {$lt: 90}})
Enter fullscreen mode Exit fullscreen mode
  • Less than equals to 
db.comments.find({member_since: {$lte: 90}})
Enter fullscreen mode Exit fullscreen mode
  • Greater than 
db.comments.find({member_since: {$gt: 90}})
Enter fullscreen mode Exit fullscreen mode
  • Greater than equals to 
db.comments.find({member_since: {$gte: 90}})
Enter fullscreen mode Exit fullscreen mode

clickhere to see MongoDb commands

Top comments (0)

Read next

visdom_04_88f1c6e8a47fe74 profile image

Agentic Mesh: Pioneering the Future of Autonomous Agent Ecosystems

VISDOM 04 -

mikeyoung44 profile image

Undetectable Backdoors in Outsourced Machine Learning Models: A Theoretical Vulnerability

Mike Young -

mdarifulhaque profile image

2563. Count the Number of Fair Pairs

MD ARIFUL HAQUE -

shannonlal profile image

Understanding MongoDB Atlas Search Scoring for Better Search Results

Shannon Lal -