Shulou(Shulou.com)06/01 Report--

Brief introduction:

There is still a big difference between the basic statements of MongoDB and MySQL. Today we will introduce some common basic statements of MongoDB:

/ / enter to create the database

Use school; automatically creates the database if the collection is created, and does not create the database if the collection is not created

/ / create a collection

Db.createCollection ('class')

/ / check the library

Show dbs

/ / View the collection

Show tables

/ / insert data

Db.class.insert ({"id": 1, "name": "zhangsan"})

Db.class.insert ({"sex": ture, "hobby": ["sport", "book", "run"]})

/ / View data

Db.class.find ()

/ / multiple inserts

For (var item2witi

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