首先,我们需要使用mongo命令连接到MongoDB数据库。假设我们的数据库名为test,连接地址为localhost:27017,用户名为user,密码为password,则连接命令如下: mongo localhost:27017/test-uuser-ppassword 1. 连接成功后,我们可以使用以下命令创建一个名为users的集合: db.createCollection("users") 1. 接下来,我们可以向us...
MongoCollection::group() - Performs an operation similar to SQL's GROUP BY command MongoDB 核心文档的 » 数据库指令 ,以及这些特定指令的文档 » findAndModify、 » getLastError、 » repairDatabase (还有很多其他指令,这只是一些例子) User...
mongocli atlas dataLakes commands control the functionality previously named Data Lake, which is now called Data Federation in the Atlas UI. The mongocli atlas dataLakes commands will continue to work for Data Federation without interruption. MongoDB's new Data Lake functionality doesn't include CL...
Note that this example is illustrative; applications would generally use MongoDB\Database::listCollections() in practice. <?php $database = (new MongoDB\Client)->test; $cursor = $database->command(['listCollections' => 1]); var_dump($cursor->toArray()); The output would resemble: ...
为了下载MongoDB Command Line Database Tools,请按照以下步骤操作: 访问MongoDB官方网站: 打开浏览器,访问MongoDB的官方网站:MongoDB官网。 在网站上找到“Database Tools”或相关下载页面: 在MongoDB官网的首页,找到并点击“Downloads”菜单。 在“Downloads”页面,你会看到多个下载选项。找到并点击“Database To...
必要的麻烦,所以我们需要给Mongo设置一个账号密码; [root@iZ2ze2pbbffhmn53ao4tuaZ bin]# ./mongod --auth # 启用认证 2.创建管理员用户 > use admin switched to db admin > db.createUser({user:"admin",pwd:"password",roles:["root"]}) ...
"db" : "", "collection" : "" }, "actions" : [ "bypassDocumentValidation", "collMod", "collStats", "compact", "convertToCapped", "createCollection", "createIndex", "dbStats", "dropCollection", "dropDatabase", "dropIndex", "enableProfiler", "listCollections", "listIndexes", "planCa...
这里mongod就会为我们显示command列表,大约有90多个 上面90多个类中,按其使用场景可以为分如下几类,分别是: - dbcommand.cpp:一般数据库指令,如数据库,索引的创建,重建,打开/关闭等 - dbcommands_admin.cpp:管理指令,如CleanCmd,JournalLatencyTestCmd,ValidateCmd,FSyncCommand - dbcommands_generic.cpp:常用指令,...
Issue a simple.command to a database on MongoDB server
② mongod(shardServer):代码目录src/mongo/db/commands ③ mongod(configServer):代码目录src/mongo/db/s/config 除了代码目录有明确的区别外,代码文件名及命令类名也各不相同。但是,命令类名和文件名也有特定的命名规范,有一定的命名规律,下面还是以mongod(含shardServer和configServer)和mongos代理为例,来说明...