db.createCollection()is a wrapper around the database commandcreate. Thedb.createCollection()method has the following prototype form: db.createCollection(<name>,{capped:<boolean>,autoIndexId:<boolean>,size:<number>,max:<number>,storageEngine:<document>,validator:<document>,validationLevel:<string>...
db.commandHelp(name) returns the help for the command db.copyDatabase(fromdb, todb, fromhost) - deprecated db.createCollection(name, {size: ..., capped: ..., max: ...}) db.createView(name, viewOn, [{$operator: {...}}, ...], {viewOptions}) db.createUser(userDocument) db.cu...
convertToCapped集合 createCollection(在数据库中) 创建视图 createCollection(在数据库中)。 但是,如果用户在数据库上具有createCollection权限,并在要创建的视图上具有find权限,则则该用户还须具有以下额外权限: find源集合或视图上。 find位于pipeline中引用的任何其他集合或视图(如有)。
AI代码解释 [xxx]$ mongo--port17380MongoDB shell version:2.4.5connecting to:127.0.0.1:17380/test mongos>db.currentOp(){"inprog":[...]}mongos>db.killOp("shard0001:163415563") 批量停止: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 db.currentOp().inprog.forEach(function(item){db.k...
使用db.createCollection() 显式创建Collection,通过指定Collection Option,创建特定用途的Collection。 Because MongoDB creates a collection implicitly when the collection is first referenced in a command, this method is used primarily for creating new collections that use specific options. ...
(name) returns the help for the command db.copyDatabase(fromdb, todb, fromhost) db.createCollection(name, { size : ..., capped : ..., max : ... } ) db.createUser(userDocument) db.currentOp() displays currently executing operations in the db db.dropDatabase() db.eval() - ...
rs0:PRIMARY> use redhat switched to db redhat 1. 2. ②新建表 rs0:PRIMARY> db.createCollection("class") { "ok" : 1, "$clusterTime" : { "clusterTime" : Timestamp(1643023713, 1), "signature" : { "hash" : BinData(0,"7SNRK8H9v7OkxWIPp1zPMMMpgMc="), "keyId" : NumberLong("...
每个命令都对应一个command基类,该类中完成命令的一些基本接口功能初始化,核心接口实现如下: 1.//命令模块基类基础接口初始化实现 2.class Command : public CommandInterface { 3.public: 4. //获取集合名collection 5. static std::string parseNsFullyQualified(...); ...
db.createCollection("集合名称")删除集合db.集合名称.drop()删除数据库db.dropDatabase() //首先要通过use切换到当前的数据库 2. Mongodb增删改查(CURD) id 系统会自动加一个 时间戳+机器码 生成 1. 增(insert) 新增一条db.userinfo.insert({name:"贾宝玉",age:25,gander:"男",address:'贾府'})...
db.createCollection("myCollection") 1. 插入文档到集合中: db.myCollection.insertOne({name:"Alice",age:25})db.myCollection.insertMany([{name:"Bob",age:30},{name:"Charlie",age:35}]) 1. 2. 查询操作 查询集合中的所有文档: db.myCollection.find() ...