DBObject query = new BasicDBObject("$in", new Object[] { ids });
DBCursor ite = col.find(query);
]]>
SELECT * FROM user
Mongo:
db.user.find()
MySQL:
SELECT * FROM user WHERE name = ’starlee’
Mongo:
db.user.find({‘name’ : ’starlee’})
插入Q?br /> MySQL:
INSERT INOT user (`name`, `age`) values (’starlee’,25)
Mongo:
db.user.insert({‘name’ : ’starlee’, ‘age’ : 25})
如果你想在MySQL里添加一个字D，你必：
ALTER TABLE user….
但在MongoDB里你只需要：
db.user.insert({‘name’ : ’starlee’, ‘age’ : 25, ‘email’ : ’starlee@starlee.com’})
删除Q?br /> MySQL:
DELETE * FROM user
Mongo:
db.user.remove({})
MySQL:
DELETE FROM user WHERE age < 30
Mongo:
db.user.remove({‘age’ : {$lt : 30}})
$gt : > ; $gte : >= ; $lt : < ; $lte : <= ; $ne : !=
更新:
MySQL:
UPDATE user SET `age` = 36 WHERE `name` = ’starlee’
Mongo:
db.user.update({‘name’ : ’starlee’}, {$set : {‘age’ : 36}})
MySQL:
UPDATE user SET `age` = `age` + 3 WHERE `name` = ’starlee’
Mongo:
db.user.update({‘name’ : ’starlee’}, {$inc : {‘age’ : 3}})
MySQL:
SELECT COUNT(*) FROM user WHERE `name` = ’starlee’
Mongo:
db.user.find({‘name’ : ’starlee’}).count()
MySQL:
SELECT * FROM user limit 10,20
Mongo:
db.user.find().skip(10).limit(20)
MySQL:
SELECT * FROM user WHERE `age` IN (25, 35,45)
Mongo:
db.user.find({‘age’ : {$in : [25, 35, 45]}})
MySQL:
SELECT * FROM user ORDER BY age DESC
Mongo:
db.user.find().sort({‘age’ : -1})
MySQL:
SELECT DISTINCT(name) FROM user WHERE age > 20
Mongo:
db.user.distinct(‘name’, {‘age’: {$lt : 20}})
MySQL:
SELECT name, sum(marks) FROM user GROUP BY name
Mongo:
db.user.group({
key : {‘name’ : true},
cond: {‘name’ : ‘foo’},
reduce: function(obj,prev) { prev.msum += obj.marks; },
initial: {msum : 0}
});
MySQL:
SELECT name FROM user WHERE age < 20
Mongo:
db.user.find(‘this.age < 20′, {name : 1})
发现很多人在搜MongoDB循环插入数据Q下面把MongoDB循环插入数据的方法添加在下面Q?br />
for(var i=0;i<100;i++)db.test.insert({uid:i,uname:’nosqlfan’+i});
上面一ơ性插入一百条数据Q大概结构如下：
{ “_id” : ObjectId(“4c876e519e86023a30dde6b8″), “uid” : 55, “uname” : “nosqlfan55″ }
{ “_id” : ObjectId(“4c876e519e86023a30dde6b9″), “uid” : 56, “uname” : “nosqlfan56″ }
{ “_id” : ObjectId(“4c876e519e86023a30dde6ba”), “uid” : 57, “uname” : “nosqlfan57″ }
{ “_id” : ObjectId(“4c876e519e86023a30dde6bb”), “uid” : 58, “uname” : “nosqlfan58″ }
{ “_id” : ObjectId(“4c876e519e86023a30dde6bc”), “uid” : 59, “uname” : “nosqlfan59″ }
{ “_id” : ObjectId(“4c876e519e86023a30dde6bd”), “uid” : 60, “uname” : “nosqlfan60″ } 易对照表
SQL Statement Mongo Query Language Statement
CREATE TABLE USERS (a Number, b Number) implicit; can be done explicitly
INSERT INTO USERS VALUES(1,1) db.users.insert({a:1,b:1})
SELECT a,b FROM users db.users.find({}, {a:1,b:1})
SELECT * FROM users db.users.find()
SELECT * FROM users WHERE age=33 db.users.find({age:33})
SELECT a,b FROM users WHERE age=33 db.users.find({age:33}, {a:1,b:1})
SELECT * FROM users WHERE age=33 ORDER BY name db.users.find({age:33}).sort({name:1})
SELECT * FROM users WHERE age>33 db.users.find({'age':{$gt:33}})})
SELECT * FROM users WHERE age<33 db.users.find({'age':{$lt:33}})})
SELECT * FROM users WHERE name LIKE "%Joe%" db.users.find({name:/Joe/})
SELECT * FROM users WHERE name LIKE "Joe%" db.users.find({name:/^Joe/})
SELECT * FROM users WHERE age>33 AND age<=40 db.users.find({'age':{$gt:33,$lte:40}})})
SELECT * FROM users ORDER BY name DESC db.users.find().sort({name:-1})
CREATE INDEX myindexname ON users(name) db.users.ensureIndex({name:1})
CREATE INDEX myindexname ON users(name,ts DESC) db.users.ensureIndex({name:1,ts:-1})
SELECT * FROM users WHERE a=1 and b='q' db.users.find({a:1,b:'q'})
SELECT * FROM users LIMIT 10 SKIP 20 db.users.find().limit(10).skip(20)
SELECT * FROM users WHERE a=1 or b=2 db.users.find( { $or : [ { a : 1 } , { b : 2 } ] } )
SELECT * FROM users LIMIT 1 db.users.findOne()
EXPLAIN SELECT * FROM users WHERE z=3 db.users.find({z:3}).explain()
SELECT DISTINCT last_name FROM users db.users.distinct('last_name')
SELECT COUNT(*y) FROM users db.users.count()
SELECT COUNT(*y) FROM users where AGE > 30 db.users.find({age: {'$gt': 30}}).count()
SELECT COUNT(AGE) from users db.users.find({age: {'$exists': true}}).count()
UPDATE users SET a=1 WHERE b='q' db.users.update({b:'q'}, {$set:{a:1}}, false, true)
UPDATE users SET a=a+2 WHERE b='q' db.users.update({b:'q'}, {$inc:{a:2}}, false, true)
DELETE FROM users WHERE z="abc" db.users.remove({z:'abc'});
CREATE TABLE USERS (a Number, b Number) implicit; can be done explicitly
INSERT INTO USERS VALUES(1,1) db.users.insert({a:1,b:1})
SELECT a,b FROM users db.users.find({}, {a:1,b:1})
SELECT * FROM users db.users.find()
SELECT * FROM users WHERE age=33 db.users.find({age:33})
SELECT a,b FROM users WHERE age=33 db.users.find({age:33}, {a:1,b:1})
SELECT * FROM users WHERE age=33 ORDER BY name db.users.find({age:33}).sort({name:1})
SELECT * FROM users WHERE age>33 db.users.find({'age':{$gt:33}})})
SELECT * FROM users WHERE age<33 db.users.find({'age':{$lt:33}})})
SELECT * FROM users WHERE name LIKE "%Joe%" db.users.find({name:/Joe/})
SELECT * FROM users WHERE name LIKE "Joe%" db.users.find({name:/^Joe/})
SELECT * FROM users WHERE age>33 AND age<=40 db.users.find({'age':{$gt:33,$lte:40}})})
SELECT * FROM users ORDER BY name DESC db.users.find().sort({name:-1})
CREATE INDEX myindexname ON users(name) db.users.ensureIndex({name:1})
CREATE INDEX myindexname ON users(name,ts DESC) db.users.ensureIndex({name:1,ts:-1})
SELECT * FROM users WHERE a=1 and b='q' db.users.find({a:1,b:'q'})
SELECT * FROM users LIMIT 10 SKIP 20 db.users.find().limit(10).skip(20)
SELECT * FROM users WHERE a=1 or b=2 db.users.find( { $or : [ { a : 1 } , { b : 2 } ] } )
SELECT * FROM users LIMIT 1 db.users.findOne()
EXPLAIN SELECT * FROM users WHERE z=3 db.users.find({z:3}).explain()
SELECT DISTINCT last_name FROM users db.users.distinct('last_name')
SELECT COUNT(*y) FROM users db.users.count()
SELECT COUNT(*y) FROM users where AGE > 30 db.users.find({age: {'$gt': 30}}).count()
SELECT COUNT(AGE) from users db.users.find({age: {'$exists': true}}).count()
UPDATE users SET a=1 WHERE b='q' db.users.update({b:'q'}, {$set:{a:1}}, false, true)
UPDATE users SET a=a+2 WHERE b='q' db.users.update({b:'q'}, {$inc:{a:2}}, false, true)
DELETE FROM users WHERE z="abc" db.users.remove({z:'abc'});
]]>
package test_yu.morphiaSpring;
import com.google.code.morphia.annotations.Embedded;
import com.google.code.morphia.annotations.Entity;
import com.google.code.morphia.annotations.Id;
/**
*
* @author yu
* 创徏了两个领域Hotel,Address,前者ؓ实体存在,有自q生命周期,后者则为内嵌在实体之中,没有独立的生命周?br /> */
@Entity
public class Hotle {
@Id
private int id;
private String name;
private int stars;
@Embedded
private Address address;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getStars() {
return stars;
}
public void setStars(int stars) {
this.stars = stars;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
}
@Embedded
class Address {
private String street;
private String city;
private String postCode;
private String country;
public String getStreet() {
return street;
}
public void setStreet(String street) {
this.street = street;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getPostCode() {
return postCode;
}
public void setPostCode(String postCode) {
this.postCode = postCode;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
}
import com.google.code.morphia.annotations.Embedded;
import com.google.code.morphia.annotations.Entity;
import com.google.code.morphia.annotations.Id;
/**
*
* @author yu
* 创徏了两个领域Hotel,Address,前者ؓ实体存在,有自q生命周期,后者则为内嵌在实体之中,没有独立的生命周?br /> */
@Entity
public class Hotle {
@Id
private int id;
private String name;
private int stars;
@Embedded
private Address address;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getStars() {
return stars;
}
public void setStars(int stars) {
this.stars = stars;
}
public Address getAddress() {
return address;
}
public void setAddress(Address address) {
this.address = address;
}
}
@Embedded
class Address {
private String street;
private String city;
private String postCode;
private String country;
public String getStreet() {
return street;
}
public void setStreet(String street) {
this.street = street;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getPostCode() {
return postCode;
}
public void setPostCode(String postCode) {
this.postCode = postCode;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
}
MorphiaBean.java
package test_yu.morphiaSpring;
import com.google.code.morphia.Datastore;
import com.google.code.morphia.Morphia;
import com.mongodb.Mongo;
public class MorphiaBean extends Morphia {
private Mongo mongo;
private String dbName;
public Datastore getDatastore(){
if(this.mongo==null||this.dbName==null){
return null;
}
return createDatastore(mongo, dbName);
}
public Mongo getMongo() {
return mongo;
}
public void setMongo(Mongo mongo) {
this.mongo = mongo;
}
public String getDbName() {
return dbName;
}
public void setDbName(String dbName) {
this.dbName = dbName;
}
}
import com.google.code.morphia.Datastore;
import com.google.code.morphia.Morphia;
import com.mongodb.Mongo;
public class MorphiaBean extends Morphia {
private Mongo mongo;
private String dbName;
public Datastore getDatastore(){
if(this.mongo==null||this.dbName==null){
return null;
}
return createDatastore(mongo, dbName);
}
public Mongo getMongo() {
return mongo;
}
public void setMongo(Mongo mongo) {
this.mongo = mongo;
}
public String getDbName() {
return dbName;
}
public void setDbName(String dbName) {
this.dbName = dbName;
}
}
MorphiaTest.java
package test_yu.morphiaSpring;
import java.net.UnknownHostException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.google.code.morphia.Datastore;
public class MorphiaTest {
public static void main(String[] args) throws UnknownHostException {
ApplicationContext context =new ClassPathXmlApplicationContext("applicationContext.xml");
MorphiaBean morphiaBean=(MorphiaBean) context.getBean("morphia");
Datastore ds=morphiaBean.getDatastore();
//向数据库中添加多条记?/span>
addManyArticles(ds);
// printLine();
//
// Article single = ds.get(Article.class,9);
// System.out.println("single = " + single);
//
// printLine();
//
// //查询文章大于5Q编辑id大于106的文?br /> // List<Article> articles= ds.find(Article.class,"id >",5).filter("editor.id >",106).asList();
// displayArticleList(articles);
//
// printLine();
//
// //更新id=123的文章标题和~辑名称
// ds.update(ds.createQuery(Article.class).where("id = 123"),ds.createUpdateOperations(Article.class).set("title","修改后的标题").set("editor.name","yumeng"));
//
// printLine();
//
// //所有id号大?的文章的~辑id?1
// ds.update(ds.createQuery(Article.class).where("id > 5"),ds.createUpdateOperations(Article.class).inc("editor.id"));
//
// printLine();
//
// //向id?23的文章的关键词列表中新增一个关键词
// ds.update(ds.createQuery(Article.class).filter("id",123),ds.createUpdateOperations(Article.class).add("keywords", "宏基"));
// //扚wd关键?br /> // List<String > keys = new ArrayList<String>();
// keys.add("苍天");
// keys.add("大地");
// ds.update(ds.createQuery(Article.class).filter("id",123),ds.createUpdateOperations(Article.class).addAll("keywords",keys,false));
// //列出所有数?br /> // Query<Article> query = ds.find(Article.class);
// displayQueryRusult(query);
}
// private static void printLine() {
// System.out.println("-------------------------------------");
// }
//
// private static void displayArticleList(List<Article> articles) {
// for (Article article : articles) {
// System.out.println("article = " + article);
// }
// }
//
// private static void displayQueryRusult(Query<Article> query) {
// Iterator<Article> it = query.fetch().iterator();
// while (it.hasNext()) {
// Article article = it.next();
// System.out.println("article.toString() = " + article.toString());
// }
// }
private static void addManyArticles(Datastore ds) {
for(int i = 0;i < 10;i++){
Hotle hotle = new Hotle();
Address address=new Address();
address.setCity("北京");
address.setCountry("中国");
address.setPostCode("100080");
address.setStreet("h中街");
hotle.setId(i);
hotle.setName("悦来酒店");
hotle.setStars(0);
hotle.setAddress(address);
ds.save(hotle);
}
}
}
import java.net.UnknownHostException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.google.code.morphia.Datastore;
public class MorphiaTest {
public static void main(String[] args) throws UnknownHostException {
ApplicationContext context =new ClassPathXmlApplicationContext("applicationContext.xml");
MorphiaBean morphiaBean=(MorphiaBean) context.getBean("morphia");
Datastore ds=morphiaBean.getDatastore();
//向数据库中添加多条记?/span>
addManyArticles(ds);
// printLine();
//
// Article single = ds.get(Article.class,9);
// System.out.println("single = " + single);
//
// printLine();
//
// //查询文章大于5Q编辑id大于106的文?br /> // List<Article> articles= ds.find(Article.class,"id >",5).filter("editor.id >",106).asList();
// displayArticleList(articles);
//
// printLine();
//
// //更新id=123的文章标题和~辑名称
// ds.update(ds.createQuery(Article.class).where("id = 123"),ds.createUpdateOperations(Article.class).set("title","修改后的标题").set("editor.name","yumeng"));
//
// printLine();
//
// //所有id号大?的文章的~辑id?1
// ds.update(ds.createQuery(Article.class).where("id > 5"),ds.createUpdateOperations(Article.class).inc("editor.id"));
//
// printLine();
//
// //向id?23的文章的关键词列表中新增一个关键词
// ds.update(ds.createQuery(Article.class).filter("id",123),ds.createUpdateOperations(Article.class).add("keywords", "宏基"));
// //扚wd关键?br /> // List<String > keys = new ArrayList<String>();
// keys.add("苍天");
// keys.add("大地");
// ds.update(ds.createQuery(Article.class).filter("id",123),ds.createUpdateOperations(Article.class).addAll("keywords",keys,false));
// //列出所有数?br /> // Query<Article> query = ds.find(Article.class);
// displayQueryRusult(query);
}
// private static void printLine() {
// System.out.println("-------------------------------------");
// }
//
// private static void displayArticleList(List<Article> articles) {
// for (Article article : articles) {
// System.out.println("article = " + article);
// }
// }
//
// private static void displayQueryRusult(Query<Article> query) {
// Iterator<Article> it = query.fetch().iterator();
// while (it.hasNext()) {
// Article article = it.next();
// System.out.println("article.toString() = " + article.toString());
// }
// }
private static void addManyArticles(Datastore ds) {
for(int i = 0;i < 10;i++){
Hotle hotle = new Hotle();
Address address=new Address();
address.setCity("北京");
address.setCountry("中国");
address.setPostCode("100080");
address.setStreet("h中街");
hotle.setId(i);
hotle.setName("悦来酒店");
hotle.setStars(0);
hotle.setAddress(address);
ds.save(hotle);
}
}
}
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>/config.properties</value>
</list>
</property>
</bean>
<bean id="mongo" class="com.mongodb.Mongo">
<constructor-arg type="String" value="219.239.88.200"></constructor-arg>
<constructor-arg type="int" value="27017"></constructor-arg>
</bean>
<bean id="morphia" class="test_yu.morphiaSpring.MorphiaBean">
<property name="mongo" ref="mongo"></property>
<property name="dbName" value="address"></property>
</bean>
</beans>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<list>
<value>/config.properties</value>
</list>
</property>
</bean>
<bean id="mongo" class="com.mongodb.Mongo">
<constructor-arg type="String" value="219.239.88.200"></constructor-arg>
<constructor-arg type="int" value="27017"></constructor-arg>
</bean>
<bean id="morphia" class="test_yu.morphiaSpring.MorphiaBean">
<property name="mongo" ref="mongo"></property>
<property name="dbName" value="address"></property>
</bean>
</beans>
需要几个支持包
]]>
//条g查询 模糊查询
Pattern john = Pattern.compile("586190",Pattern.CASE_INSENSITIVE);
BasicDBObject query = new BasicDBObject("url", john); // finds all people with "name" matching /joh?n/i DBCursor cursor = collection.find(query);
DBCursor ite = col.find(query);
Pattern john = Pattern.compile("586190",Pattern.CASE_INSENSITIVE);
BasicDBObject query = new BasicDBObject("url", john); // finds all people with "name" matching /joh?n/i DBCursor cursor = collection.find(query);
DBCursor ite = col.find(query);
]]>
安装pymongo模块?a target="_blank">http://api.mongodb.org/python/
按照版本安装相应模块。自动默认到python安装目录
#coding=utf-8
from pymongo import Connection
conn = Connection("localhost")
db = conn.foo
test = {"id":1, "novle":"试一?/span>"}
db.foo.save(test)
cursor = db.foo.find()
for i in cursor:
print i
虽然报错Q不影响执行
out
{u'_id': ObjectId('4bc193c11724bc0cc4000000'), u'id': 1, u'novle': u'\ufffd\ufffd\ufffd\ufffd'}
OK 试成功
下次 是?怎么在DJANGO里面 使用mongodb?/p>
CODE:
> show dbs如果x看当前连接在哪个数据库下面，可以直接输入db
CODE:
> db
Admin惛_换到test数据库下?
CODE:
> use test
switched to db test
> db
Testx看test下有哪些表或者叫collectionQ可以输?
CODE:
> show collections
system.indexes
user想知道mongodb支持哪些命oQ可以直接输入help
CODE:
> 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 如果想知道当前数据库支持哪些ҎQ?
CODE:
> db.help();
DB methods:
db.addUser(username, password) d数据库授权用?br />
db.auth(username, password) 讉K认证
db.cloneDatabase(fromhost) 克隆数据?br />
db.commandHelp(name) returns the help for the command
db.copyDatabase(fromdb, todb, fromhost) 复制数据?br />
db.createCollection(name, { size : ..., capped : ..., max : ... } ) 创徏?br />
db.currentOp() displays the current operation in the db
db.dropDatabase() 删除当前数据?br />
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?br />
db.printReplicationInfo() 打印L据库的复制状态信?br />
db.printSlaveReplicationInfo() 打印从数据库的复制状态信?br />
db.printShardingStatus() 打印分片状态信?br />
db.removeUser(username) 删除数据库用?br />
db.repairDatabase() 修复数据?br />
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 如果想知道当前数据库下的表或者表collection支持哪些ҎQ可以用一下命令如Q?
CODE:
> db.user.help(); user?br />
DBCollection help
db.foo.count() l计表的行数
db.foo.dataSize() l计表数据的大小
db.foo.distinct( key ) - eg. db.foo.distinct( 'x' ) 按照l定的条仉?br />
db.foo.drop() drop the collection 删除?br />
db.foo.dropIndex(name) 删除指定索引
db.foo.dropIndexes() 删除所有烦?br />
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. Ҏ条g查找数据
-----------------------
通过条g查询Q?db.foo.find( { x : 77 } , { name : 1 , x : 1 } )
-----------------------------
db.foo.find(...).count()
db.foo.find(...).limit(n) Ҏ条g查找数据q返回指定记录数
db.foo.find(...).skip(n)
db.foo.find(...).sort(...) 查找排序
db.foo.findOne([query]) Ҏ条g查询只查询一条数?br />
db.foo.getDB() get DB object associated with collection q回表所属的?br />
db.foo.getIndexes() 昄表的所有烦?br />
db.foo.group( { key : ..., initial: ..., reduce : ...[, cond: ...] } ) Ҏ条g分组
db.foo.mapReduce( mapFunction , reduceFunction , <optional params> )
db.foo.remove(query) Ҏ条g删除数据
db.foo.renameCollection( newName ) renames the collection 重命名表
db.foo.save(obj) 保存数据
db.foo.stats() 查看表的状?br />
db.foo.storageSize() - includes free space allocated to this collection 查询分配到表I间大小
db.foo.totalIndexSize() - size in bytes of all the indexes 查询所有烦引的大小
db.foo.totalSize() - storage allocated for all data and indexes 查询表的d?br />
db.foo.update(query, object[, upsert_bool]) Ҏ条g更新数据
db.foo.validate() - SLOW 验证表的详细信息
db.foo.getShardVersion() - only for use with sharding Mongodb的备份工具mongodump如果惛_份数据库test 如：
CODE:
[falcon@www.fwphp.cn ~/mongodb/bin]$ ./mongodump --help
options:
--help produce help message
-h [ --host ] arg mongo host to connect to
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
-u [ --username ] arg username
-p [ --password ] arg password
--dbpath arg directly access mongod data files in this path,
instead of connecting to a mongod instance
-v [ --verbose ] be more verbose (include multiple times for more
verbosity e.g. -vvvvv)
-o [ --out ] arg (=dump) output directory
[falcon@www.fwphp.cn ~/mongodb/bin]$ [color=Blue]./mongodump -d test -o test/[/color]
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查看test库中的表
CODE:
> show collections
system.indexes
User删除user?
CODE:
> db.user.drop();
True
> show collections
System.indexes现在利用mongorestore表恢复刚才利用mongodump备䆾的数?
CODE:
[falcon@www.fwphp.cn ~/mongodb/bin]$ ./mongorestore --help
usage: ./mongorestore [options] [directory or filename to restore from]
options:
--help produce help message
-h [ --host ] arg mongo host to connect to
-d [ --db ] arg database to use
-c [ --collection ] arg collection to use (some commands)
-u [ --username ] arg username
-p [ --password ] arg password
--dbpath arg directly access mongod data files in this path,
instead of connecting to a mongod instance
-v [ --verbose ] be more verbose (include multiple times for more
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?0w条记录已l恢?
CODE:
> 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
1. 用户相关Q?/span>
#增加或修改用户密?br />
db.addUser('admin','pwd')
#查看用户列表
db.system.users.find()
#用户认证
db.auth('admin','pwd')
#删除用户
db.removeUser('mongodb')
#查看所有用?br />
show users
#查看所有数据库
show dbs
#查看所有的collection
show collections
#查看各collection的状?br />
db.printCollectionStats()
#查看M复制状?br />
db.printReplicationInfo()
#修复数据?br />
db.repairDatabase()
#讄记录profilingQ?/span>0=off 1=slow 2=all
db.setProfilingLevel(1)
#查看profiling
show profile
#拯数据?br />
db.copyDatabase('mail_addr','mail_addr_tmp')
#删除collection
db.mail_addr.drop()
#删除当前的数据库
db.dropDatabase()
2. 客户端连?br />
/usr/local/mongodb/bin/mongo user_addr -u user -p 'pwd'
3. 增删?br />
#存储嵌套的对?br />
db.foo.save({'name':'ysz','address':{'city':'beijing','post':100096},'phone':[138,139]})
#存储数组对象
db.user_addr.save({'Uid':'yushunzhi@sohu.com','Al':['test-1@sohu.com','test-2@sohu.com']})
#Ҏquery条g修改Q如果不存在则插入，允许修改多条记录
db.foo.update({'yy':5},{'$set':{'xx':2}},upsert=true,multi=true)
#删除yy=5的记?br />
db.foo.remove({'yy':5})
#删除所有的记录
db.foo.remove()
4. 索引
增加索引Q?/span>1(ascending),-1(descending)
db.things.ensureIndex({firstname: 1, lastname: 1}, {unique: true});
#索引子对?br />
db.user_addr.ensureIndex({'Al.Em': 1})
#查看索引信息
db.deliver_status.getIndexes()
db.deliver_status.getIndexKeys()
#Ҏ索引名删除烦?br />
db.user_addr.dropIndex('Al.Em_1')
5. 查询
查找所?br />
db.foo.find()
#查找一条记?br />
db.foo.findOne()
#Ҏ条g?0条记?br />
db.foo.find({'msg':'Hello 1'}).limit(10)
#sort排序
db.deliver_status.find({'From':'yushunzhi@sohu.com'}).sort({'Dt',-1})
db.deliver_status.find().sort({'Ct':-1}).limit(1)
#count操作
db.user_addr.count()
#distinct操作
db.foo.distinct('msg')
#>操作
db.foo.find({"timestamp": {"$gte" : 2}})
#子对象的查找
db.foo.find({'address.city':'beijing'})
6. 理
查看collection数据的大?br />
db.deliver_status.dataSize()
#查看colleciont状?br />
db.deliver_status.stats()
#查询所有烦引的大小
db.deliver_status.totalIndexSize()
#增加或修改用户密?br />
db.addUser('admin','pwd')
#查看用户列表
db.system.users.find()
#用户认证
db.auth('admin','pwd')
#删除用户
db.removeUser('mongodb')
#查看所有用?br />
show users
#查看所有数据库
show dbs
#查看所有的collection
show collections
#查看各collection的状?br />
db.printCollectionStats()
#查看M复制状?br />
db.printReplicationInfo()
#修复数据?br />
db.repairDatabase()
#讄记录profilingQ?/span>0=off 1=slow 2=all
db.setProfilingLevel(1)
#查看profiling
show profile
#拯数据?br />
db.copyDatabase('mail_addr','mail_addr_tmp')
#删除collection
db.mail_addr.drop()
#删除当前的数据库
db.dropDatabase()
2. 客户端连?br />
/usr/local/mongodb/bin/mongo user_addr -u user -p 'pwd'
3. 增删?br />
#存储嵌套的对?br />
db.foo.save({'name':'ysz','address':{'city':'beijing','post':100096},'phone':[138,139]})
#存储数组对象
db.user_addr.save({'Uid':'yushunzhi@sohu.com','Al':['test-1@sohu.com','test-2@sohu.com']})
#Ҏquery条g修改Q如果不存在则插入，允许修改多条记录
db.foo.update({'yy':5},{'$set':{'xx':2}},upsert=true,multi=true)
#删除yy=5的记?br />
db.foo.remove({'yy':5})
#删除所有的记录
db.foo.remove()
4. 索引
增加索引Q?/span>1(ascending),-1(descending)
db.things.ensureIndex({firstname: 1, lastname: 1}, {unique: true});
#索引子对?br />
db.user_addr.ensureIndex({'Al.Em': 1})
#查看索引信息
db.deliver_status.getIndexes()
db.deliver_status.getIndexKeys()
#Ҏ索引名删除烦?br />
db.user_addr.dropIndex('Al.Em_1')
5. 查询
查找所?br />
db.foo.find()
#查找一条记?br />
db.foo.findOne()
#Ҏ条g?0条记?br />
db.foo.find({'msg':'Hello 1'}).limit(10)
#sort排序
db.deliver_status.find({'From':'yushunzhi@sohu.com'}).sort({'Dt',-1})
db.deliver_status.find().sort({'Ct':-1}).limit(1)
#count操作
db.user_addr.count()
#distinct操作
db.foo.distinct('msg')
#>操作
db.foo.find({"timestamp": {"$gte" : 2}})
#子对象的查找
db.foo.find({'address.city':'beijing'})
6. 理
查看collection数据的大?br />
db.deliver_status.dataSize()
#查看colleciont状?br />
db.deliver_status.stats()
#查询所有烦引的大小
db.deliver_status.totalIndexSize()
]]>