MongoDB Quick Start
来自Jack's Lab
(版本间的差异)
(→Update) |
(→Mongo Shell) |
||
第162行: | 第162行: | ||
2 | 2 | ||
</source> | </source> | ||
+ | |||
+ | <br><br> | ||
=== Update === | === Update === |
2014年12月16日 (二) 15:52的版本
目录 |
1 Install
comcat@maike:~# apt-get install mongodb Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: libboost-filesystem1.42.0 libboost-program-options1.42.0 libboost-system1.42.0 libboost-thread1.42.0 libmozjs2d libpcrecpp0 mongodb-clients mongodb-dev mongodb-server ...... ...... Processing triggers for man-db ... Setting up libboost-system1.42.0 (1.42.0-4) ... Setting up libboost-filesystem1.42.0 (1.42.0-4) ... Setting up libboost-program-options1.42.0 (1.42.0-4) ... Setting up libboost-thread1.42.0 (1.42.0-4) ... Setting up libmozjs2d (1.9.1.16-20) ... Setting up libpcrecpp0 (8.02-1.1) ... Setting up mongodb-clients (1:1.4.4-3) ... Setting up mongodb-server (1:1.4.4-3) ... Adding system user `mongodb' (UID 105) ... Adding new user `mongodb' (UID 105) with group `nogroup' ... Not creating home directory `/home/mongodb'. Adding group `mongodb' (GID 110) ... Done. Adding user mongodb to group mongodb Done. Starting database: mongodb. Setting up mongodb-dev (1:1.4.4-3) ... Setting up mongodb (1:1.4.4-3) ... comcat@maike:~# ps ax|grep mongo 30109 ? Sl 0:00 /usr/bin/mongod --dbpath /var/lib/mongodb --logpath /var/log/mongodb/mongodb.log --config /etc/mongodb.conf run 30319 pts/0 S+ 0:00 grep mongo
The configuration file is located at /etc/mongodb.conf
It use /var/lib/mongodb as the database directory by default. You can modify it as you like.
2 Mongo Shell
comcat@maike:~# dpkg -L mongodb-clients | grep bin /usr/bin /usr/bin/mongo /usr/bin/mongodump /usr/bin/mongoexport /usr/bin/mongofiles /usr/bin/mongoimport /usr/bin/mongorestore /usr/bin/mongostat comcat@maike:~# mongo MongoDB shell version: 1.4.4 url: test connecting to: test type "help" for help > > help HELP show dbs show database names show collections show collections in current database show users show users in current database show profile show most recent system.profile entries with time >= 1ms use <db name> set curent database to <db name> db.help() help on DB methods db.foo.help() help on collection methods db.foo.find() list objects in collection foo db.foo.find( { a : 1 } ) list objects in foo where a == 1 it result of the last line evaluated; use to further iterate > show dbs admin local
2.1 Create DB
comcat@maike:~$ mongo MongoDB shell version: 1.4.4 url: test connecting to: test type "help" for help > > use test switched to db test > show dbs admin local >
This can not create the database immediatelly. System will create it when there is data inserted in.
2.2 Create Collection
System will create the collection when there is data inserted in:
> use test switched to db test > db.getCollectionNames() [ ] > db.users.insert({username:"smith"}) > show dbs admin local test > db.getCollectionNames() [ "system.indexes", "users" ]
2.3 Delete Collection
> use test switched to db test > db.getCollectionNames() [ "system.indexes", "users" ] > db.users.drop() true > db.getCollectionNames() [ "system.indexes" ]
2.4 Insert
Insert a doc (similar to line) into users (It's a Collection, similar to table)
> use test switched to db test > show dbs admin local > db.users.insert({username:"Jack Tan"}) > db.users.find() { "_id" : ObjectId("548fdcedfddefec3659e6e29"), "username" : "Jack Tan" } > show dbs admin local test > db.users.save({username:"Jones"}) > db.users.find() { "_id" : ObjectId("548fdcedfddefec3659e6e29"), "username" : "Jack Tan" } { "_id" : ObjectId("548fdd29fddefec3659e6e2a"), "username" : "Jones" } > db.users.count() 2
2.5 Update
> db.users.find() { "_id" : ObjectId("548fe214991680933fb5a008"), "username" : "smith" } { "_id" : ObjectId("548fe28e991680933fb5a009"), "username" : "Jack Tan" } { "_id" : ObjectId("548fe29d991680933fb5a00a"), "username" : "Gaga Liu" } > db.users.update({username:"smith"},{$set:{country:"Canada"}}) > db.users.find({username:"smith"}) { "_id" : ObjectId("548fe214991680933fb5a008"), "country" : "Canada", "username" : "smith" } > db.users.update({username:"smith"},{$unset:{country: 1}}) > db.users.find({username:"smith"}) { "_id" : ObjectId("548fe214991680933fb5a008"), "username" : "smith" } > db.users.update({username:"smith"},{$set:{favorites: ... { ... cities:["Chicago", "Cheyenne"], ... movies:["Casablanca", "The Sting"] ... } ... } ... }) > db.users.find({username:"smith"}) { "_id" : ObjectId("548fe214991680933fb5a008"), "favorites" : { "cities" : [ "Chicago", "Cheyenne" ], "movies" : [ "Casablanca", "The Sting" ] }, "username" : "smith" }
2.6 Delete DB
> show dbs admin local test > use test switched to db test > db.dropDatabase() { "dropped" : "test.$cmd", "ok" : 1 } > show dbs admin local