MongoDB使用 - Oracle-fans - 博客园

[root@oracle11g ~]# mongo

MongoDB shell version: 2.4.9

connecting to: test

> use admin

switched to db admin

> show dbs

admin   (empty)

local   0.078125GB

> use my_mongodb

switched to db my_mongodb

> db.user.insert({uid:1,username:"Tom",age:25});

> db.user.insert({uid:2,username:"Jerry",age:25});

> db.user.insert({uid:1,username:"oracle",age:30});

向数据库my_mongodb的表user中插入了2条记录。MongoDB会隐式的创建数据库my_mongodb和表user

> show dbs

admin   (empty)

local   0.078125GB

my_mongodb      0.203125GB

> show collections

system.indexes

user

> db.user.find();

{ "_id" : ObjectId("55823677108162d31a1af236"), "uid" : 1, "username" : "Tom", "age" : 25 }

{ "_id" : ObjectId("55823696108162d31a1af237"), "uid" : 2, "username" : "Jerry", "age" : 25 }

{ "_id" : ObjectId("558236c0108162d31a1af238"), "uid" : 1, "username" : "oracle", "age" : 30 }

> db.user.find({username:"Jerry"});

{ "_id" : ObjectId("55823696108162d31a1af237"), "uid" : 2, "username" : "Jerry", "age" : 25 }

> db.user.update({uid:2},{$set:{age:100}}) ;

> db.user.find({uid:2});

{ "_id" : ObjectId("55823696108162d31a1af237"), "uid" : 2, "username" : "Jerry", "age" : 100 }