MongoDB

PyMongo

https://docs.mongodb.org/getting-started/python/

db.user.find({
             $and: 
                  [
                    {"user_id": {$exists: true}}, 
                    {"createtime":        
                      {$gte: "1442289375298", $lte: "1442544392813"}}

                  ]

            })

tianzhaixing@c-mini:~$ mongo
> use douban
> db.Culture.find({"bookinfo.ISBN":"9787100017664"})
{ "_id" : ObjectId("56089dee145da4e928192eb5"), "bookinfo" : { "平均评分" : "9.3", "书名" : "國史大綱（上下）", "出版社" : "商務印書館", "出版年" : "2013-8", "页数" : "914", "定价" : "76.00元", "装帧" : "平装", "丛书" : "", "ISBN" : "9787100017664", "coverurl" : "http://img6.douban.com/lpic/s1034305.jpg" } }
> new Date('2015-07-01').valueOf()
1435708800000
>new Date('2015-10-16').valueOf()
1444953600000

foba:PRIMARY> db.scanbehavior.find({"type": "byBarcode"}, {'bid':{"$exists":true}}, {'createtime': {"$gt":'1445702400000', "lte": '1446307200000'} }).count()
12331
foba:PRIMARY> db.scanbehavior.find({"type": {"$ne":"byBarcode"}}, {'bid':{"$exists":true}}, {'createtime': {"$gt":'1445702400000', "lte": '1446307200000'} }).count()
20407

Pymongo Operator

>>> UserIdsAgents = logs.find({"$and":[{"body.user_id":{"$exists":"True"}}, {"headers.user-agent":{"$exists":"True"}}]})
>>> UserIdsAgents.count()
16934
>>> userAgentTypes = set()
>>> for cur in UserIdsAgents:
...    userAgentTypes.add(cur['headers']['user-agent'])
...
>>> len(userAgentTypes)
14
>>> for s in userAgentTypes:
...     print s
...
bookshelf/0.8.0 (iPhone; iOS 8.4; Scale/2.00)
bookshelf/0.8.0 (iPhone; iOS 9.1; Scale/3.00)
bookshelf/0.8.0 (iPhone; iOS 9.1; Scale/2.00)
bookshelf/0.8.0 (iPhone; iOS 9.0.2; Scale/2.00)
bookshelf/0.8.0 (iPhone; iOS 9.0; Scale/2.00)
node-superagent/1.3.0
bookshelf/0.8.0 (iPad; iOS 7.1.2; Scale/2.00)
Mozilla/5.0 (Linux; Android 4.2.2; GT-I9505 Build/JDQ39) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/31.0.1650.59 Mobile Safari/537.36
bookshelf/0.8.0 (iPhone; iOS 9.0.2; Scale/3.00)
bookshelf/0.8.0 (iPhone; iOS 8.1; Scale/2.00)
bookshelf/0.8.0 (iPhone; iOS 8.3; Scale/2.00)
bookshelf/0.8.0 (iPhone; iOS 8.4.1; Scale/2.00)
okhttp/2.5.0
bookshelf/0.8.0 (iPod touch; iOS 9.1; Scale/2.00)
>>>

Mongo server start error solution

ps wuax | grep mongo

You should see something that looks like this

User   31936   0.5 0.4 2719784 35624   ?? S     7:34pm   0:09.98 mongod

User   31945   0.0 0.0 2423368   184 s000 R+   8:24pm   0:00.00 grep mongo

Now enter the kill command for the mongod instance (31936 in this case):

kill 31936

MongoDB的启动和关闭

• 以守护进程方式启动
  进入bin目录

  ./mongod

• 打开客户端

  ./mongo

• 关闭服务
  客户端下

  db.shutdownServer()

• 退出客户端

  exit

删除当前使用数据库 db.dropDatabase();

删除collection

drop() 命令的基本语法如下

db.COLLECTION_NAME.drop()

MongoDB导出数据

$ mongoexport --db douban  --collection books --out douban9plusbooks.json

$ mongoexport --host 192.168.200.20 --db bookshelf --username '***' --password '***' --collection book --out workspace/MongoDBexport/TOPin.csv

$ mongoexport --host=192.168.100.3 --port=27019 --db=master --collection=data --query='{"spider":"6w"}' --fields="data.ISBN" --type=csv --out=dataISBN.csv

MongoDB拷贝数据

1 开启mongo 服务器

$ sudo mongod

password:

2 开启mongo 客户端

$ mongo

> db.copyDatabase("douban", "douban", "192.168.1.156", "jt", "***")

3 说明

db.copyDatabase(fromdb,todb,fromhost,username,password,mechanism)

db.copyDatabase

password: 有密码就输入密码，没有就为空字符串”“.

Mongodb insert_many

> db.collection.insert_many

insert_many

>>>db.test.count()

0

>>>result=db.test.insert_many([{'x':i}foriinrange(2)])

>>>result.inserted_ids

[ObjectId('54f113fffba522406c9cc20e'), ObjectId('54f113fffba522406c9cc20f')]

>>>db.test.count()