Node.js mongodb 메서드

Model methods:

• create: creates a new document and saves it to the database
• findById: finds a document by its ID
• findByIdAndUpdate: finds a document by its ID and updates it
• findByIdAndDelete: finds a document by its ID and deletes it
• findOne: finds a single document that matches the query criteria
• findOneAndUpdate: finds a single document that matches the query criteria and updates it
• findOneAndDelete: finds a single document that matches the query criteria and deletes it
• updateOne: updates a single document that matches the query criteria
• updateMany: updates all documents that match the query criteria
• deleteOne: deletes a single document that matches the query criteria
• deleteMany: deletes all documents that match the query criteria
• countDocuments: counts the number of documents that match the query criteria

Query methods:

• where: specifies a query condition
• equals: specifies an exact match query condition
• gt: specifies a greater than query condition
• gte: specifies a greater than or equal to query condition
• lt: specifies a less than query condition
• lte: specifies a less than or equal to query condition
• in: specifies an inclusion query condition
• nin: specifies an exclusion query condition
• limit: limits the number of documents returned
• skip: skips a specified number of documents
• sort: sorts the documents based on the specified criteria
• select: specifies the fields to include or exclude in the query results
• populate: populates the referenced documents in a document or documents
• exec: executes the query

Document methods:

• save: saves the document to the database
• update: updates the document in the database
• remove: removes the document from the database
• set: sets the value of a document field
• get: gets the value of a document field
• validate: validates the document against the schema

Schema methods:

• pre: specifies middleware functions to execute before a certain event occurs
• post: specifies middleware functions to execute after a certain event occurs
• virtual: creates a virtual property that is not stored in the database
• static: adds a static method to the model that can be called directly on the model