Mongodb 基本操作

1.创建数据库

>use newdb

>insert db.collection.insert({'name':'azhe'})

2.查询

>db.collection.find({'name':'azhe'})

>db.collection.findOne({'name':'azhe'})

3.插入

>db.collection.insert({''name':'azhe'})

4.更新

>db.collection.update({'name':'azhe'},{'name':'zhe'})      //更新覆盖整个文档

>db.collection.update({'name':'azhe'},{'$set':{'name':'zhe'}})   //更新文档数据

5.删除

>db.collection.remove({'name':'azhe'})