dantederuwe / mongodb-exercises

Learning mongoDB with these. If you spot any mistakes, please submit an issue or fork this repo and create a pr!

Hi there

I’m a full-stack software developer, looking to become the IT professional of the future. My passion is designing and building software solutions, mainly with C# and .NET. I am fascinated by software architecture, clean code, and software craftsmanship.

Enthusiastic, eager to learn, and always looking for a challenge. In my free time, I like to cook, meet with friends, and recently picked up the hobby of playing and collecting board games. I also enjoy music; whether that be listening to it, going to see it live, or playing it myself.

mongodb-exercises's Issues

missing bracket in smartphones.js

mongodb-exercises/1. find, insert, update, remove/smartphones.js

Line 27 in f14fe96

{ organizer: { $nin: "Call list", "Calculator"]}}

should be:
{ organizer: { $nin: ["Call list", "Calculator"]}}

Missing limit(10): firstname_oefening 3

//3 Give the top 10 of firstnames for the year 1995 throughout Belgium. There is sorting from more to less popular.
db.firstnames.mapReduce(
function () { if (this.year == 1995) emit(this.firstname, this.amount) },
function (k, v) { return Array.sum(v) },
{ out: "temp" }
).find().sort({ value: -1 }).LIMIT(10)

nyse.json

Hello,

Thank you for providing this. I am not able to find nyse.json though.

Thanks,

Vraagje: zou je deze ook nog op andere manieren kunnen oplossen?

mongodb-exercises/2. aggregate/bel20.js

Line 53 in 48f4a27

db.bel20.aggregate([