文章目录
1,查看数据库2,查看数据库表3,数据库表命令4,超级用户相关5,客户端连接6,增删改7,索引8,查询9,管理
1,查看数据库
> db
.stats
();
{
"db" :
"test",
"collections" :
3,
"objects" :
4,
"avgObjSize" :
51,
"dataSize" :
204,
"storageSize" :
16384,
"numExtents" :
3,
"indexes" :
1,
"indexSize" :
8176,
"fileSize" :
201326592,
"nsSizeMB" :
16,
"dataFileVersion" : {
"major" :
4,
"minor" :
5
}
,
"ok" :
1
}
2,查看数据库表
> db
.posts
.stats
();
{
"ns" :
"test.posts",
"count" :
1,
"size" :
56,
"avgObjSize" :
56,
"storageSize" :
8192,
"numExtents" :
1,
"nindexes" :
1,
"lastExtentSize" :
8192,
"paddingFactor" :
1,
"systemFlags" :
1,
"userFlags" :
0,
"totalIndexSize" :
8176,
"indexSizes" : {
"_id_" :
8176
}
,
"ok" :
1
}
3,数据库表命令
> show dbs
> db
Admin
> use test
switched
to db test
> db
Test
> show collections
system
.indexes
user
> 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
> db
.help
();
Java代码 收藏代码
DB methods:
db
.addUser
(username
, password
) 添加数据库授权用户
db
.auth
(username
, password
) 访问认证
db
.cloneDatabase
(fromhost
) 克隆数据库
db
.commandHelp
(name
) returns the help
for the command
db
.copyDatabase
(fromdb
, todb
, fromhost
) 复制数据库
db
.createCollection
(name
, { size :
..., capped :
..., max :
... }
) 创建表
db
.currentOp
() displays the
current operation
in the db
db
.dropDatabase
() 删除当前数据库
db
.eval_r
(func
, args
) run code server
-side
db
.getCollection
(cname
) same
as db
['cname'] or db
.cname
db
.getCollectionNames
() 获取当前数据库的表名
db
.getLastError
() - just
returns the err msg string
db
.getLastErrorObj
() - return full status object
db
.getMongo
() get the server connection object
db
.getMongo
().setSlaveOk
() allow this connection
to read from the nonmaster member
of a replica pair
db
.getName
()
db
.getPrevError
()
db
.getProfilingLevel
()
db
.getReplicationInfo
()
db
.getSisterDB
(name
) get the db at the same server
as this onew
db
.killOp
() kills the
current operation
in the db
db
.printCollectionStats
() 打印各表的状态信息
db
.printReplicationInfo
() 打印主数据库的复制状态信息
db
.printSlaveReplicationInfo
() 打印从数据库的复制状态信息
db
.printShardingStatus
() 打印分片状态信息
db
.removeUser
(username
) 删除数据库用户
db
.repairDatabase
() 修复数据库
db
.resetError
()
db
.runCommand
(cmdObj
) run a
database command
. if cmdObj
is a string
, turns it
into { cmdObj :
1 }
db
.setProfilingLevel
(level) 0=off 1=slow
2=all
db
.shutdownServer
()
db
.version
() current version
of the server
> db
.user.help
(); user为表名
Java代码 收藏代码
DBCollection help
db
.foo
.count() 统计表的行数
db
.foo
.dataSize
() 统计表数据的大小
db
.foo
.distinct( key ) - eg
. db
.foo
.distinct( 'x' ) 按照给定的条件除重
db
.foo
.drop() drop the collection 删除表
db
.foo
.dropIndex
(name
) 删除指定索引
db
.foo
.dropIndexes
() 删除所有索引
db
.foo
.ensureIndex
(keypattern
,options
) - options should be an object
with these possible
fields: name
, unique, dropDups 增加索引
db
.foo
.find
( [query
] , [fields]) - first parameter
is an optional query filter
. second parameter
is optional
set of fields to return.
通过条件查询: db
.foo
.find
( { x :
77 }
, { name :
1 , x :
1 }
)
> db
.user.help
(); user为表名
Java代码 收藏代码
DBCollection help
db
.foo
.count() 统计表的行数
db
.foo
.dataSize
() 统计表数据的大小
db
.foo
.distinct( key ) - eg
. db
.foo
.distinct( 'x' ) 按照给定的条件除重
db
.foo
.drop() drop the collection 删除表
db
.foo
.dropIndex
(name
) 删除指定索引
db
.foo
.dropIndexes
() 删除所有索引
db
.foo
.ensureIndex
(keypattern
,options
) - options should be an object
with these possible
fields: name
, unique, dropDups 增加索引
db
.foo
.find
( [query
] , [fields]) - first parameter
is an optional query filter
. second parameter
is optional
set of fields to return.
通过条件查询: db
.foo
.find
( { x :
77 }
, { name :
1 , x :
1 }
)
instead
of connecting
to a mongod instance
-v
[
verbosity e
.g
. -vvvvv
)
-o
[
[falcon
@www.fwphp.cn ~/mongodb
/bin
]$
./mongodump
-d test
-o test
/
connected
to:
127.0.0.1
DATABASE: test
to test
/test
test
.user to test
/test
/user.bson
100000 objects
test
.system
.indexes
to test
/test
/system
.indexes
.bson
1 objects
[falcon
@www.fwphp.cn ~/mongodb
/bin
]$ ls
2 mongo mongodump mongofiles mongorestore mongosniff
dump mongod mongoexport mongoimport mongos test
MongoDB的数据恢复工具mongorestore
> show collections
system
.indexes
User
> db
.user.drop();
True
> show collections
System
.indexes
[falcon
@www.fwphp.cn ~/mongodb
/bin
]$
./mongorestore
usage:
./mongorestore
[options
] [directory
or filename
to restore from]
options:
-h
[
-d
[
-c
[
-u
[
-p
[
instead
of connecting
to a mongod instance
-v
[
verbosity e
.g
. -vvvvv
)
[falcon
@www.fwphp.cn ~/mongodb
/bin
]$
./mongorestore
-d test
-c
user test
/test
/user.bson
connected
to:
127.0.0.1
test
/test
/user.bson
going
into namespace
[test
.user]
100000 objects
User表中的
10w条记录已经恢复
> show collections
system
.indexes
user
> db
.user.find
();
{
"_id" : ObjectId
("4b9c8db08ead0e3347000000"), "uid" :
1, "username" :
"Falcon.C-1" }
{
"_id" : ObjectId
("4b9c8db08ead0e3347010000"), "uid" :
2, "username" :
"Falcon.C-2" }
{
"_id" : ObjectId
("4b9c8db08ead0e3347020000"), "uid" :
3, "username" :
"Falcon.C-3" }
{
"_id" : ObjectId
("4b9c8db08ead0e3347030000"), "uid" :
4, "username" :
"Falcon.C-4" }
{
"_id" : ObjectId
("4b9c8db08ead0e3347040000"), "uid" :
5, "username" :
"Falcon.C-5" }
.................
has more
4,超级用户相关
db
.addUser
('admin','pwd')
db
.system
.users
.find
()
db
.auth
('admin','pwd')
db
.removeUser
('mongodb')
show users
show dbs
show collections
db
.printCollectionStats
()
db
.printReplicationInfo
()
db
.repairDatabase
()
db
.setProfilingLevel
(1)
show profile
db
.copyDatabase
('mail_addr','mail_addr_tmp')
db
.mail_addr
.drop()
db
.dropDatabase
()
5,客户端连接
/usr
/local/mongodb
/bin
/mongo user_addr
-u
user -p
'pwd'
6,增删改
db
.foo
.save({
'name':
'ysz','address':{
'city':
'beijing','post':
100096}
,'phone':
[138,139]}
)
db
.user_addr
.save({
'Uid':
'yushunzhi@sohu.com','Al':
['test-1@sohu.com','test-2@sohu.com']}
)
db
.foo
.update({
'yy':
5}
,{
'$set':{
'xx':
2}}
,upsert
=true,multi
=true)
db
.foo
.remove
({
'yy':
5}
)
db
.foo
.remove
()
7,索引
db
.things
.ensureIndex
({firstname:
1, lastname:
1}
, {
unique:
true}
);
db
.user_addr
.ensureIndex
({
'Al.Em':
1}
)
db
.deliver_status
.getIndexes
()
db
.deliver_status
.getIndexKeys
()
db
.user_addr
.dropIndex
('Al.Em_1')
8,查询
db
.foo
.find
()
db
.foo
.findOne
()
db
.foo
.find
({
'msg':
'Hello 1'}
).limit(10)
db
.deliver_status
.find
({
'From':
'yushunzhi@sohu.com'}
).sort
({
'Dt',-1}
)
db
.deliver_status
.find
().sort
({
'Ct':
-1}
).limit(1)
db
.user_addr
.count()
db
.foo
.distinct('msg')
db
.foo
.find
({
"timestamp": {
"$gte" :
2}}
)
db
.foo
.find
({
'address.city':
'beijing'}
)
9,管理
db
.deliver_status
.dataSize
()
db
.deliver_status
.stats
()
db
.deliver_status
.totalIndexSize
()