db.collection.drop(<options>) 从数据库中删除集合或视图。该方法还会删除与删除的集合关联的任何索引。该方法为drop命令提供了一个包装器。 返回: true 注意 如果指定的集合不存在, db.collection.drop() 仍返回 true。 兼容性 此方法可用于以下环境中托管的部署: MongoDB Atlas:用于云中 MongoDB 部署的完全托...
To launch MongoDB Charts to visualize data in your databases and collections. 1 In Atlas, go to theClusterspage for your project. If it's not already displayed, select the organization that contains your desired project from theOrganizationsmenu in the navigation bar. ...
mongodb database tools wire protocol mongosh methods native methods atlas search index atlas stream processing collections db.collection.aggregate db.collection.analyzeshardkey db.collection.bulkwrite db.collection.compactstructuredencryptiondata db.collection.configurequeryanalyzer db.collection.count db....
db.collection_name.remove(<query>,{Writeconcern,justone}) Thequeryparameter is defined as the ability to delete specific articles from a collection based on criteria stated in the query.justoneargument is defined, which deletes one document from the collection. It must always be enabled by sett...
The Performance Advisor flags an index as unused if it hasn't supported a query in 7 or more days after it was created or the server was restarted. Note The Performance Advisor inspects only the 20 most active collections for unused indexes. ...
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For example, the query outcome below is true. The result set will show true because the database server has deleted the collection. show collections db.test1.drop() show collections The above query result is false. The output in the result-set will be false since the collection has not ...
MongoDB Manual / 参考 / 数据库命令 / 管理 定义 dropDatabase dropDatabase命令会删除当前数据库,并删除关联的数据文件。 兼容性 此命令可用于以下环境中托管的部署: MongoDB Atlas:用于云中 MongoDB 部署的完全托管服务 注意 所有MongoDB Atlas 集群都支持此命令。有关 Atlas 对所有命令的支持的信息,请参阅不...
See Field Encryption and Queryability in the MongoDB manual for more information. This option is not passed to the drop command. The library uses it to determine related metadata collections that should be dropped in addition to an encrypted collection. New in version 1.13. session MongoDB\...
MongoDB Enterprise:基于订阅、自我管理的 MongoDB 版本 MongoDB Community:源代码可用、免费使用且可自行管理的 MongoDB 版本 行为 身份验证 在mongod上删除角色时,之前通过身份验证的用户仍会保持登录数据库的状态,但会立即失去该角色的权限。 在mongos上删除角色时,以前经过身份验证的用户仍保持登录数据库的状态,但...