요약

데이터베이스 선택/생성

use firstDatabase;

데이터가 포함된 컬렉션/테이블 삽입/생성

통사론

//INSERT one data in the collection
db.NameOfCollection.insertOne({"user": "admin", "password": "admin"});

//INSERT several data in the collection
db.NameOfCollection.insertMany([
  {"user": "admin", "password": "admin"},
  {"user": "admin", "password": "admin"},
  {"user": "admin", "password": "admin", "age": "10"}
]);

예시

//INSERT one data in the collection user
db.user.insertOne({"user": "admin", "password": "admin"});

//INSERT one data in the collection person
db.person.insertOne({"name": "Bill Gates", "age": "66 "});

//INSERT several data in the collection user
db.user.insertMany([
  {"user": "admin1", "password": "admin1"}, 
  {"user": "admin2", "password": "admin2"},
  {"user": "admin1", "password": "password"}
]);

/*INSERT several data in other collection
in this case collection person*/
db.person.insertMany([
  {"name": "Joao", "age": "10"}, 
  {"name": "Joao", "age": "20"},
  {"name": "Lucas", "age": "15"}
]);

생성된 데이터베이스 표시

통사론

show dbs;

예시

//Result example:
admin    0.000GB
config   0.000GB
local    0.000GB
firstDatabase  0.000GB

데이터베이스의 모든 컬렉션 표시

통사론

show collections;

예시

//Result example:
person
user

컬렉션에서 데이터 선택

통사론

//Select all the register of one collection equal to SELECT all
db.NameOfCollection.find(); 

//SELECT the first register in the collection
db.NameOfCollection.findOne(); 

//SELECT all when the parameter is true
db.NameOfCollection.find({"WHERE"}); 

//SELECT all with the result similar to a Json (Bson)
db.NameOfCollection.find().pretty(); 

예시

//Data
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca1"), "user" : "admin1", "password" : "admin1" }
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca2"), "user" : "admin2", "password" : "admin2" }
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca3"), "user" : "admin1", "password" : "password" }

//SELECT the first with user = admin1
db.user.findOne({"user": "admin1"}); 

//Result
{
        "_id" : ObjectId("62c4d5e11a23db9b29b9fca1"),
        "user" : "admin1",
        "password" : "admin1"
}

//SELECT all with user = admin1
db.user.find({"user": "admin1"}); 

//Result
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca1"), "user" : "admin1", "password" : "admin1" }
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca3"), "user" : "admin1", "password" : "password" }

//SELECT all and return a Bson
db.usuario.find().pretty(); 

//Result
{
        "_id" : ObjectId("62c4d5e11a23db9b29b9fca1"),
        "user" : "admin1",
        "password" : "admin1"
}
{
        "_id" : ObjectId("62c4d5e11a23db9b29b9fca2"),
        "user" : "admin2",
        "password" : "admin2"
}
{
        "_id" : ObjectId("62c4d5e11a23db9b29b9fca3"),
        "user" : "admin1",
        "password" : "password"
}

하나의 레지스트리/문서에서 데이터 업데이트

통사론

/*Update the data when the first parameter is true to the second parameter 
don't change the struct*/

//Update one when the first parameter is true
db.NameOfCollection.updateOne({"WHERE"}, {$set:"SET"}); 

//Update all when the first parameter is true
db.NameOfCollection.updateMany({"WHERE"}, {$set:"SET"});

예시

//Data
db.user.insertMany([
  {"user": "admin1", "password": "admin1"}, 
  {"user": "admin2", "password": "admin2"},
  {"user": "admin1", "password": "password"}
]);

//UPDATE one when the first parameter is true
db.firstDatabase.updateOne({"user" : "admin1"}, {$set: {"password": "new-password"}}); 

//Result
db.user.insertMany([
  {"user": "admin1", "password": "new-password"}, 
  {"user": "admin2", "password": "admin2"},
  {"user": "admin1", "password": "password"}
]);

//UPDATE all when the first parameter is true
db.user.updateMany({"user" : "admin1"}, {$set: {"password": "new-password"}}); 

//Result
db.user.insertMany([
  {"user": "admin1", "password": "new-password"}, 
  {"user": "admin2", "password": "admin2"},
  {"user": "admin1", "password": "new-password"}
]);

하나의 레지스트리/문서에서 모든 데이터 업데이트

통사론

/*Change ALL data when the first parameter is true to the second parameter 
change the struct, similar to ALTER TABLE*/

//Change just the first when the parameter is true
db.NameOfCollection.replaceOne({"WHERE"}, {"Nova estrutura"});

예시

//Data
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca1"), "user" : "admin1", "password" : "admin1" }
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca2"), "user" : "admin2", "password" : "admin2" }
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca3"), "user" : "admin1", "password" : "password" }

/*Alter all data from the first when user = admin1
  to "password": "new-password"*/
db.user.replaceOne({"user" : "admin1"}, {"password": "new-password"}); 

//Result
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca1"), "password" : "new-password" }
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca2"), "user" : "admin2", "password" : "admin2" }
{ "_id" : ObjectId("62c4d5e11a23db9b29b9fca3"), "user" : "admin1", "password" : "password" }

컬렉션에서 데이터 삭제

통사론

//Delete just the first when the parameter is true
db.NameOfCollection.deleteOne({"WHERE"});

//Delete all data from the collection when the parameter is true
db.NameOfCollection.deleteMany({"WHERE"});

//Delete all data from the collection
db.NameOfCollection.deleteMany({});

예시

//Data
{ "_id" : ObjectId("62c4d3121a23db9b29b9fc9e"), "name" : "Joao", "age" : "10" }
{ "_id" : ObjectId("62c4d3121a23db9b29b9fc9f"), "name" : "Joao", "age" : "20" }
{ "_id" : ObjectId("62c4d3121a23db9b29b9fca0"), "name" : "Lucas", "age" : "15" }

//DELETE the first with name = Joao
db.user.deleteOne({"name" : "Joao"}); 

//Result
{ "_id" : ObjectId("62c4d3121a23db9b29b9fc9f"), "name" : "Joao", "age" : "20" }
{ "_id" : ObjectId("62c4d3121a23db9b29b9fca0"), "name" : "Lucas", "age" : "15" }

//DELETE all data with name = Joao
db.user.deleteMany({"name" : "Joao"}); 

//Result
{ "_id" : ObjectId("62c4d3121a23db9b29b9fca0"), "name" : "Lucas", "age" : "15" }

데이터베이스 삭제

통사론

//Select the database
use database;
//Delete it
db.dropDatabase();