// global操作的资源锁,如reIndex、renameCollection、replSetResizeOplog等操作都会acquire global W 锁RESOURCE_DATABASE,// database级别操作的资源锁,如cloneCollectionCapped、collMod、compact、convertToCapped等操作都会acquire data
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mongo --port 27017 //#切换到admin库 use admin //关闭服务 db.shutdownServer() 需要使用admin数据库,官方说明如下: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 db.shutdownServer() Shuts down the current mongod or mongos process cleanly and safely. This operation fails when the current...
use for the operation. defaults to the collection's write concern. it is not possible to specify a write concern for individual operations as part of a transaction. instead, set the writeconcern option when starting the transaction . return values a mongodb\insertoneresult object, which ...
如果db.collection.insert()操作成功插入文档,则该操作会为oplog(操作日志)添加一个条目。如果操作失败,则该操作不会为 oplog 添加条目。 示例 以下示例会将文档插入到products集合。如果集合不存在,insert()方法会创建该集合。 插入文档而不指定_id字段
Alternatively, you can take an approach that is very similar to mgo but uses the UnmarshalBSONValue and MarshalBSONValue functions that work in a similar way to GetBSON and SetBSON. There was no need at this stage to use codecs here for us; providing implementations for these unmarshal/mars...
Theauthenticatemethod is not supported. To connect to a database with authentication, please supply the credentials using the connection string. The$cmdcollection cannot be used due to an issue in the underlying driver. To run commands, use thecommandmethod instead of querying the virtual$cmdcollect...
cursor_in_use_info.cpp cursor_in_use_info.h d_concurrency_bm.cpp d_concurrency_test.cpp database_name.cpp database_name.h database_name_reserved.def.h database_name_test.cpp db_raii.cpp db_raii.h db_raii_multi_collection_test.cpp db_raii_test.cpp dbcommands.idl dbdirectclient.cpp ...
If you need to match arrays by more than one element, you can use "$all". This allows you to match a list of elements. For example, suppose we created a collection with three elements: > db.food.insert({"_id" : 1, "fruit" : ["apple", "banana", "peach"]}) > db.food.inser...