总结

列举insert插入方法

MongoDB provides the following methods for inserting  into a collection:

	Inserts a single document into a collection.
	inserts multiple  into a collection.
	inserts a single document or multiple documents into a collection.

Additional Methods for Inserts

The following methods can also add new documents to a collection:

•  when used with the upsert: true option.
•  when used with the upsert: true option.
•  when used with the upsert: true option.
•  when used with the upsert: true option.
•  when used with the upsert: true option.
•  when used with the upsert: true option.
• .
• .

See the individual reference pages for the methods for more information and examples.