mongodb安装笔记
--下面大部分都是参考网上资料,仅仅作为笔记使用
参考链接
Mongodb官网安装
Mongodb官网对比
相关文档
我的mongodb安装在[d:\Java\mongodb]
所以需要根目录手动创建文件夹【e:\data\db】
mongodb使用服务方式安装
'D:\Java\mongodb\bin\mongod.exe --bind_ip 127.0.0.1 --logpath d:\\Java\\mongodb \\logs\\MongoLog.log --logappend --dbpath d:\\data --directoryperdb --service' Fri Jan 10 09:17:45.050 Service can be started from the command line with 'net s tart MongoDB'日志需要指定具体的文件,比如MongoLog.log 之前没有置顶就报错【服务没有及时响应或控制请求】
安装、删除服务指令
mongod --install
mongod --service
mongod --remove
mongod --reinstall
或者
C:\mongodb\bin\mongod.exe --remove
启动服务
net start Mongodb停止服务
net stop Mongodb测试简单 java script语句
> 3+3
6
> db
test
> // the first write will create the db:
> db.foo.insert( { a : 1 } )
> db.foo.find()
{ _id : ..., a : 1 }
mongo.exe的详细的用法可以参考mongo.exe --help
下面从官网摘抄下来的普通sql跟MongoDB的区别
Create and Alter
The following table presents the various SQL statements related totable-level actions and the corresponding MongoDB statements.
| SQL Schema Statements | MongoDB Schema Statements | Reference |
|---|---|---|
CREATE TABLE users (
id MEDIUMINT NOT NULL
AUTO_INCREMENT,
user_id Varchar(30),
age Number,
status char(1),
PRIMARY KEY (id)
)
|
Implicitly created on first insert() operation. The primary key_idis automatically added if_id field is not specified.
db.users.insert( {
user_id: "abc123",
age: 55,
status: "A"
} )
However, you can also explicitly create a collection:
db.createCollection("users")
|
Seeinsert() anddb.createCollection()for more information. |
ALTER TABLE users ADD join_date DATETIME |
Collections do not describe or enforce the structure of itsdocuments; i.e. there is no structural alteration at thecollection level. However, at the document level, update() operations can add fields to existingdocuments using the$set operator.
db.users.update(
{ },
{ $set: { join_date: new Date() } },
{ multi: true }
)
|
See the Data Modeling Concepts, update(), and$set for moreinformation on changing the structure of documents in acollection. |
ALTER TABLE users DROP COLUMN join_date |
Collections do not describe or enforce the structure of itsdocuments; i.e. there is no structural alteration at the collectionlevel. However, at the document level, update() operations can remove fields fromdocuments using the$unset operator.
db.users.update(
{ },
{ $unset: { join_date: "" } },
{ multi: true }
)
|
See Data Modeling Concepts, update(), and$unset for more information on changing the structure ofdocuments in a collection. |
CREATE INDEX idx_user_id_asc ON users(user_id) |
db.users.ensureIndex( { user_id: 1 } )
|
See ensureIndex()andindexes for more information. |
CREATE INDEX
idx_user_id_asc_age_desc
ON users(user_id, age DESC)
|
db.users.ensureIndex( { user_id: 1, age: -1 } )
|
See ensureIndex()andindexes for more information. |
DROP TABLE users |
db.users.drop() |
See drop() formore information. |
Insert
The following table presents the various SQL statements related toinserting records into tables and the corresponding MongoDB statements.
| SQL INSERT Statements | MongoDB insert() Statements | Reference |
|---|---|---|
INSERT INTO users(user_id,
age,
status)
VALUES ("bcd001",
45,
"A")
|
db.users.insert( {
user_id: "bcd001",
age: 45,
status: "A"
} )
|
See insert() for more inform |