Mongo DB Basic Operation
| 想用一下MONGO DB，结果发现基本操作都忘记了 = = |
再找一下记录一下
service
sudo service mongodb start
sudo service mongodb stop
sudo systemctl start mongodb
sudo systemctl stop mongodb
CRUD
$ mongo
db.stats()
db.help()
show dbs
use <dbname>
show collections
db.user.insert({name:'mr.a', age:10, gender:'m', hobbies:['programming']});
db.<collection-name>.find()
db.user.find( {name:'ms.c'} )
db.user.find({age:{$gte:20}})
db.コレクション名.update({検索条件}, {更新内容})
db.counter.update( {type:'success'} ,{$inc:{count:1}}, true)
db.user.remove({age:{$gte:30}})
REF
