Mongodb Cheat Sheet

Posted By admin  On 30.04.21



  1. Mongodb Cheat Sheet 2020
  2. Mongodb Cheat Sheet Pdf
  3. Mongodb Cheat Sheet Github
  4. Mongodb Cheat Sheet 2019

MongoDB Cheat Sheet(Beginners).:

In this cheat sheet we gave you the basic CRUD (Create, Read, Update, Delete) commands that will be commonly used with Mongoose. Mongoose is a very easy library to get up and running with so get started and try out some commands. You can install Mongoose from npm. How to Build a Real-time Chat App With NodeJS, Socket.IO, and MongoDB In this tutorial, we’ll be building a real-time chat application with NodeJS, Express, Socket.io, and MongoDB. Here is a screenshot of what we'll build: Setup I’ll assume that you already have NodeJS and NPM installed.

Mongodb Cheat Sheet 2020

Sheet
  • show dbs -> to show databases
  • use {database name} -> To create & use a database
  • db.createCollection(“collection name”) -> To create a collection
  • db -> To check current database
  • db.dropDatabase() -> To delete/drop a database
  • db.[collection-name].drop() -> To delete/drop a collection
  • show collections -> To show collections
  • db.[collection-name].insertOne({key:value}) -> To insert one
  • db.[collection-name].insertMany([{key:value}, {key:value}]) -> To insert many
  • db.[collection-name].find(query(optional), projection(optional))-> To find data
  • db.[collection-name].find(query(optional), projection(optional)).pretty() -> To find data and prettify it
  • db.[collection-name].find().count() -> To count the number of data in a collection
  • db.[collection-name].find().sort({value:1}) -> To sort the values : -1 : Descending, 1 : Ascending
  • db.[collection-name].find().limit(value) -> To limit the data show
  • db.[collection-name].updateOne({_id:1}, {$set: {age:21}}) -> To update one set of value
  • db.[collection-name].updateMany({_id:1}, {$set: {age:21}}) -> To update many set of value
  • db.[collection-name].deleteOne({_id:1}) -> To delete

    • Mongodb Cheat Sheet Pdf

    from Tumblr https://generouspiratequeen.tumblr.com/post/641179649218576385

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    APPLIES TO: SQL API

    The Azure Cosmos DB query cheat sheets help you quickly write queries for your data by displaying common database queries, operations, functions, and operators in easy-to-print PDF reference sheets. The cheat sheets include reference information for the SQL, MongoDB, Table, and Gremlin APIs.

    Choose from a letter-sized or A3-sized download.

    Letter-sized cheat sheets

    Download the Azure Cosmos DB letter-sized query cheat sheets if you're going to print to letter-sized paper (8.5' x 11').

    Oversized cheat sheets

    Download the Azure Cosmos DB A3-sized query cheat sheets if you're going to print using a plotter or large-scale printer on A3-sized paper (11.7' x 16.5').

    Next steps

    Mongodb Cheat Sheet Github

    For more help writing queries, see the following articles:

    Mongodb Cheat Sheet 2019

    • For SQL API queries, see Query using the SQL API, SQL queries for Azure Cosmos DB, and SQL syntax reference
    • For MongoDB queries, see Query using Azure Cosmos DB's API for MongoDB and Azure Cosmos DB's API for MongoDB feature support and syntax
    • For Gremlin API queries, see Query using the Gremlin API and Azure Cosmos DB Gremlin graph support
    • For Table API queries, see Query using the Table API