When you run a database command, you specify the command as a document to db.runCommand(). The document's key is the command to run, and the value is typically supplied as 1. The value does not affect the output
There is no “create” command in the MongoDB Shell. In order to create a database, you will first need to switch the context to a non-existing database using theusecommand: xxxxxxxxxx 1 1 > use myshinynewdb Note that, for now, only the context has been changed. If you enter the...
db.cloneDataBase(fromhost) 从目标服务器克隆一个数据库 db.commandHelp(name) returns the help for the command db.copyDatabase(fromdb,todb,fromhost) 复制数据库fromdb---源数据库名称,todb---目标数据库名称,fromhost---源数据库服务器地址 db.createCollection(name,{size:3333,capped:333,max:88888})...
db.cloneDatabase(fromhost) db.commandHelp(name) returns the help for the command db.copyDatabase(fromdb, todb, fromhost) db.createCollection(name, { size : ..., capped : ..., max : ... } ) db.currentOp() displays the current operation in the db db.dropDatabase() db.eval(func,...
adminCommand(nameOrDocument) - switches to 'admin' db, and runs command [ just calls db.runCommand(...) ] db.auth(username, password) db.cloneDatabase(fromhost) db.commandHelp(name) returns the help for the command db.copyDatabase(fromdb, todb, fromhost) db.createCollection(name, { ...
db.commandHelp(name) returns the help for the command db.copyDatabase(fromdb,todb,fromhost) 复制数据库fromdb---源数据库名称,todb---目标数据库名称,fromhost---源数据库服务器地址 db.createCollection(name,{size:3333,capped:333,max:88888}) 创建一个数据集,相当于一个表 ...
> db.dropDatabase(); { "ok" : 1 } > show dbs; admin 0.000GB config 0.000GB local 0.000GB 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 五、数据的增删查改 1.查——数据的查询 ①某个表的所有数据查询 rs0:PRIMARY> db.class.find({"type":"televison"}) ...
「建立集合」延伸模組命令建立新的 MongoDB 集合。 使用的資料庫名稱來自use database命令設定的資料庫內容。 CreateCollection 命令的格式如下所示: JavaScript {customAction:"CreateCollection",collection:"<Collection Name>",shardKey:"<Shard key path>",// Replace the line below with "autoScaleSettings: {...
db.commandHelp(name) // returns the help for the command db.copyDatabase(fromdb,todb,fromhost) // 复制数据库fromdb---源数据库名称,todb---目标数据库名称,fromhost---源数据库服务器地址 db.createCollection(name,{size:3333,capped:333,max:88888}) // 创建一个数据集,相当于一个表 ...
command: mongod --dbpath /data/db --replSet newset --smallfiles --oplogSize 128 运行测试: //运行docker-compose exec master mongo//设置rs.initiate()rs.add('slave:27017')//slave 可以是IPrs.add('myarbiter:27017',true)//设置为仲裁节点//查看配置rs.conf() rs.status() //插入信息到主节...