mongodb c# tutorial

10) db.char.find ({' name ': ' Weixiaobao '}). Skip (2). Limit (10)f) The query returns the number of bars Db.char.find ({' name ': ' Weixiaobao '}). Count ()g) sort (by name ascending, age descending) Db.char.find (). Sort ({' name ': 1, ' age ':-1})h) Query the specified column to db.char.distinct (' name ')i) Remove the set Db.char.drop ()j) Create index Db.char.ensureIndex ({' Name ': 1, ' Age ': 1},{unique:true})k) View index db.char.getIndexes ()L) Delete index Db.char.dropIndex (' IndexN

://pecl.php.net/get/mongo-1.5.5.tgz. III. Installation Just like installing lamp (linux + apache + mysql + php. Apache and mysql can be installed first, but php must be followed by these two. Here we use the standard lamp sequence. 1. install apache: yuminstall httpd *-y After installation, modify the configuration file/etc/httpd/conf/httpd. conf. ServerName host ip address or host name: Listener port (format, configured according to your actual situation) 2. install

Tags: http io os ar sp file data on CTIRemove () methodThe Remove () method of MongoDB is used to remove a document from the collection. The Remove () method accepts two parameters. The first one is to delete the criteria, the second is the JUSTONE flag: Deletion criteria: (optional) Delete the standard, depending on the file will be deleted. Justone: (optional) If set to TRUE or 1, then delete only one file. Grammar:The basic syntax

Label:Recently learning MongoDB, in order to deepen the memory, write a writing essay, first start and close MongoDB start1. Start a MongoDB service:Mongod--port XXXX--dbpath/xx/xx--logpath mongo.log--forkThere are four parameters in this command:--port xxxx Specifies the port of MongoDB listening, if the XXXX port is

PHP Simple Operation MongoDB Method (installation and additions and deletions to change), MongoDB additions and deletions This article describes the simple operation of the MongoDB method of PHP. Share to everyone for your reference, as follows: PHP operation MongoDB Words first from the Internet to download

The Mongodb tutorial series is a distributed file storage-based database. Written in C ++. It is designed to provide scalable, high-performance data storage solutions for WEB applications. MongoDB is a product between relational databases and non-relational databases. It has the most abundant functions and features lik

for critical data, it is better to use W:1 J:true. It is important to note that journal is recommended to open anyway, set j:true, just say driver call GetLastError () to wait for journal write to complete before returning. This is not to say that the server-side journal is closed without setting j:true. About GetLastError ()In general, developers write code, do not need to call the Db.getlasterror () function, driver after each write operation, will automatically call the method immediately.

phone number , Field2,field3,fiel D4,field5,field6,field7--file/data/test.txtmongoexport-d test_dbtsv-c test_table--csv-u zhou-p 123-f mobile phone number , Field2,field3,field4,field7-o/data/test . txtExport data to specify fieldsThe two platforms are mainly local file path is different, if you want to log in with the user name password to write the corresponding parameters (-u-p)! The prerequisite for user authentication is to assign the account pa

. ③: Finally to see if the success of the open, from the information in the figure, MongoDB using 27017 ports, then we will type in the browser "http://localhost:27017/", After opening, MongoDB tells us that on 27017 add 1000 can view MongoDB Management information in HTTP mode. Three: basic operation Because it is the opening, it is probably the next b

instance to back up all the databases. Mongodump--host yiibai.com--port 27017 Mongodump--dbpath Db_path--out backup_directory Mongodump--dbpath/data/db/--out/data/backup/ Mongodump--collection Collection--db db_name This command backs up the specified set of databases that are uniquely specified. Mongodump--collection mycol--db test Recovering dataRestore the backup data using MongoDB's Mongorerstore command. This command restor

time of the download, there is a rule that even "stable" (for example: 1.6.x,1.8.x), the base is "development" (for example: 1.7.x,1.9.x).2.2 InstallationAfter the download, after decompression, there will be three directories. The bin directory is a program file, and the other two directories are header and library files called by C + +. Here's what some of the program files in the bin directory do: Mongo.exe command-line client Tools Mongod.exe com

We are about to start the simplest MongoDB connection to access data. Before that, you have installed MongoDB! Maybe, probably, it should have been installed. Really not installed yet? So: Click here to [install MongoDB] Start: Download a C # driver first. MongoDB provid

Tags: io os using SP file data on CTI ADLimit () methodTo limit the records in MongoDB, you need to use the limit () method. The limit () method accepts a numeric parameter, which is the number of documents to display.Grammar:The basic syntax for the limit () method is as follows>db. Collection_name. Find(). Limit(number) ExampleConsider the collection Myycol with the following data{ "_ID" : ObjectId(5983548781331adf45ec5), "Title":"