MQL, Query Filter, Operator

SQL vs MQL(MongoDB Query Language)

https://www.mongodb.com/docs/manual/reference/sql-comparison/

SQL to MongoDB Mapping Chart — MongoDB Manual

 

SELECT * FROM table; <-> db.collection.find()

CREATE TABLE ~ <-> db.createCollection(), 또는 데이터 insert 시 자동으로 컬렉션 생성

---

Query Filter, Operator

db.collection.find(
    { age: {$gt : 10} }
}

{ age: {$gt : 10} } => Query criteria, Query filter

$gt => Operator

 

https://www.mongodb.com/docs/manual/reference/operator/

Operators — MongoDB Manual