MAC下用brew安装mongodb

1.安装

brew install mongodb

2.启动命令mongo，出现箭头>说明已经启动成功

mongo

➜  workspace mongo
MongoDB shell version: 3.2.8
connecting to: test
>

3.简单的使用

➜  workspace mongo
MongoDB shell version: 3.2.8
connecting to: test
> show dbs;  //查询库
local  0.000GB
mongo  0.000GB
> show collections; //查询表
> use myDbs;   //创建一个名为myDbs的数据库，当这个库存在时则是切换到这个数据库中去
switched to db myDbs
> db.dropDatabase();  
{ "ok" : 1 }
> show dbs;
local  0.000GB
mongo  0.000GB
> use myDbs;
switched to db myDbs
> show dbs;
local  0.000GB
mongo  0.000GB
> show collections;
> db.myTable.insert({name:'hf',age:20});  //在mongodb中在插入数据时即建立了改表，此时建立的是名为myTable的数据表
WriteResult({ "nInserted" : 1 })
> show collections;  //查询表
myTable
> db.myTable.update({name:'hf'},{$set:{age:25}}) //修改
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })
> db.myTable.insert({name:'hhh',age:12});//插入
WriteResult({ "nInserted" : 1 })
> db.myTable.find();  //查询myTable表的全部数据
{ "_id" : ObjectId("5a01160ed78cb73b1908e4bd"), "name" : "hf", "age" : 25 }
{ "_id" : ObjectId("5a011695d78cb73b1908e4be"), "name" : "hhh", "age" : 12 }
> db.myTable.find().sort({age:1})  //根据age升序
{ "_id" : ObjectId("5a011695d78cb73b1908e4be"), "name" : "hhh", "age" : 12 }
{ "_id" : ObjectId("5a01160ed78cb73b1908e4bd"), "name" : "hf", "age" : 25 }
> db.myTable.find().count()    //查询表myTable的个数
2
> db.myTable.remove({name:'hhh'})     //删除
WriteResult({ "nRemoved" : 1 })
>

4.打开客户端发现，已经建立了一个库名为myDbs，表名为myTable的信息