mongodb remove duplicate documents

Discover mongodb remove duplicate documents, include the articles, news, trends, analysis and practical advice about mongodb remove duplicate documents on

MongoDB Development Learning

If you have never been familiar with MongoDB or have a little understanding of MongoDB, if you are a C # developer, take a few minutes to read this article. This article will take you step by step to get started easily. Read directory 1:

"Turn" MongoDB knowledge points at a glance

Original link knowledge points at a glance1. Start the MongoDB database:Go to the MongoDB installation directory and execute the following commandC:\Program

Install MongoDB 3.0 server on CentOS7

Install MongoDB 3.0 server on CentOS71. Download and install MongoDB 3.0 official version released! This marks a new development stage for MongoDB databases, providing a powerful, flexible, and easy-to-manage database management system. MongoDB

MongoDB Introductory article

0) MONGO: Connect MongoDB database via client1) Show DBS---Display the currently created database2) Use test---Create or switch databases3) Db.dropdatabase ()--Delete the current database3) Show Collections: Displays the collection created by the

MongoDB Basic Command

Some basics forget to check at any time.#整备恢复Mongodump--port 20001--authenticationdatabase=admin-u *-D lvlv-c lvlv-o/homeMongorestore--drop--host 20001--authenticationdatabase=admin-umgbackup-d test/tmp/liding/test

Getting started with MongoDB

Basic concepts of MongoDB 1. The document is the basic unit of data in MongoDB. It is similar to the row of a relational database (but more complex than the row) 2. a set can be seen as a table without a schema 3. A single MongoDB instance can

MongoDB Database Index

Indexes can often greatly improve the efficiency of queries, and if there is no index, MongoDB must scan every file in the collection and select those records that meet the query criteria when reading the data. This scan full set of query efficiency

The use of the web crawler's MongoDB database

A. ConciseMongoDB is a powerful, flexible, and easy-to-scale universal database1. Ease of UseMongoDB is a document-oriented (document-oriented) database, not a relational database. The main purpose of the non-relational type is to obtain better

MongoDB Study Notes (INDEX)

MongoDB Study Notes (INDEX) Postedon I. indexing basics: MongoDB indexes are almost the same as traditional relational databases, which also include some basic optimization techniques. The following command creates an index: db. test. ensureIndex

MongoDB Simple operation

MongoDB is an open source database system based on distributed file the case of high load , adding more nodes can guarantee the server performanceMongoDB stores data as a document and data Structures consist of key -value (key=value)

Total Pages: 6 1 2 3 4 5 6 Go to: Go

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.