db.collection.count()

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

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

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

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

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

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

use andmebaasi_nimi

use kollektsiooni_nimi

db.switch()

db.use()

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

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

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

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

show dbs

show collections

use

db.stats()

db.collection.updateOne()

db.collection.findOne()

db.collection.drop()

db.collection.insertOne()

Kollektsioon on relatsioonilise andmebaasi tabel, millel on kindel skeem.

Kollektsioon sisaldab andmebaasi, milles on dokumendid.

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

Kollektsioon on andmebaasi tabel, kus iga rida esindab dokumenti.

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

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

db.collection.insert()

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

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

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

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

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