db.collection.aggregate([{$count: "documentCount"}])

db.collection.count()

db.collection.aggregate([{$sum: 1}])

use kollektsiooni_nimi

db.switch()

db.use()

use andmebaasi_nimi

db.collection.find({salary: 5000})

db.collection.find({salary: gt 5000})

db.collection.find({salary > 5000})

db.collection.find({salary: {$gt: 5000}})

db.collection.aggregate([{$group: {department: "$department"}}])

db.collection.aggregate([{$group: {_id: "$department"}}])

db.collection.aggregate([{$groupBy: {department: "$department"}}])

db.collection.aggregate([{$sort: {department: 1}}])

use

show collections

show dbs

db.stats()

db.collection.updateOne()

db.collection.findOne()

db.collection.insertOne()

db.collection.drop()

Kollektsioon on andmebaasi tabel, kus iga rida esindab dokumenti.

Kollektsioon on andmebaasis dokumentide kogum, kus iga dokument sisaldab välju ja nende väärtusi.

Kollektsioon on relatsioonilise andmebaasi tabel, millel on kindel skeem.

Kollektsioon sisaldab andmebaasi, milles on dokumendid.

db.collection.find({name: {$regex: "^A"}})

db.collection.find({name: {$startsWith: "A"}})

db.collection.find({name: "A*"})

db.collection.find({name: {$match: "A%"}})

db.collection.insertDocuments([{name: "John"}, {name: "Jane"}])

db.collection.addMany([{name: "John"}, {name: "Jane"}])

db.collection.insertOne([{name: "John"}])

db.collection.insert()