mongodb not equal operator

/*** MongoDB $type operator*/ /*** The $type operator is based on the Bson type to retrieve the matching data type in the collection and returns the result.* The types of MongoDB that can be used are shown in the following table:* Type Number Notes*

MongoDB is a document-oriented database, which is currently developed and maintained by 10gen. It has rich functions and is complete and can completely replace MySQL. In the process of using MongoDB as a product prototype, we summarized some

1). Greater than, less than, greater than or equal to, less than or equal to$GT: Greater Than$LT: Less than$gte: greater than or equal to$lte: Less than or equal toExample:Db.collection.find ({"field": {$gt: Value}}); Greater Than:field >

First contact with MongoDB reference & paste: http://jingyan.baidu.com/article/ed15cb1b52b8661be2698162.htmlOne. Installation1. First go to the official website to downloadGo to all versions and choose a slightly less new version-because before

first, to install MongoDB 1.:http://www.mongodb.org/downloads 2. Unzip to the directory you want to install, such as D:\mongodb 3. Create folders d:\mongodb\data\db, D:\mongodb\data\log, respectively, to install the DB and log files, create a log

1). Greater than, less than, greater than or equal to, less than or equal to $GT: Greater Than $LT: Less than $gte: greater than or equal to $lte: Less than or equal to Example: Db.collection.find ({"field": {$gt: Value}}); Greater Than:field >

First, to install MongoDB1.:http://www.mongodb.org/downloads(recommended) Baidu Cloud Link: https://pan.baidu.com/s/1pKZXSsb Password: vkju2. Unzip to the directory you want to install, such as D:\mongodb3. Create folders d:\mongodb\data\db,

1. Download extract MongoDB, configure environment variablesTAR-ZXVF mongodb-linux-x86_64-rhel62-3.2.7.tgzExport Path=/bin: $PATH2. Create a data Save directoryMkdir-p/data/db3.mongodb Boot./mongod//Default boot./mongod--dbpath=/data/db//Start

Find () methodTo query data from a MongoDB collection, you need to use MongoDB's find() method.Grammarfind()The basic syntax of the command is as follows:>db.COLLECTION_NAME.find(document)Shellfind()Method will display all documents in an

About MongoDB, not much to say, I would also like to install the experience.MongoDB InstallationI installed the version: mongodb-win32-i386-2.6.71, set up the folder in the D disk d:\mogondb, create folders d:\mongodb\data\db, D:\mongodb\data\log,