简介: MongoDB:2-MongoDB的基本命令(insert、delete、find、update) 1.展示数据库、数据表 show dbs 展示所有数据库 use dbname 进入dbname数据库,大小写敏感,没有这个数据库也不要紧 use 命令后跟的数据库名,如果存在就进入此数据库, 如果不存在就创建,所以这种创建方式又叫隐式创建 注意:使用命令use mydb1...
#1、增 use db1#选择所在数据库 #方式一: db.table1.insert({'a':1})#当第一个文档插入时,集合就会被创建并包含该文档 #方式二: db.table2#创建一个空集合 #2、查 show collections show tables#两者等价 #3、删 db.table1.drop() #集合没有改的操作 1. 2. 3. 4. 5. 6. 7. 8. 9. 10...
db.runCommand( { delete: <collection>, deletes: [ { q : <query>, limit : <integer>, collation: <document>, hint: <document|string> }, ... ], comment: <any>, let: <document>, // Added in MongoDB 5.0 ordered: <boolean>, ...
3.2 版本后还有以下几种语法可用于插入文档:db.collection.insertOne():向指定集合中插入一条文档数据db.collection.insertMany():向指定集合中插入多条文档数据# 插入单条数据> var document = db.collection.insertOne({"a": 3})> document{"acknowledged" : true,"insertedId" : ObjectId("571a218011a82a1...
db.collection.deleteOne() deletes the first document that matches the filter. Use a field that is part of a unique index such as _id for precise deletions. Capped Collections db.collection.deleteOne() returns a WriteError exception if used on a capped collection. Time Series Collections ...
MongoDBResourcesGetMongoUserDefinitionOptionalParams MongoDBResourcesGetMongoUserDefinitionResponse MongoDBResourcesListMongoDBCollectionPartitionMergeHeaders MongoDBResourcesListMongoDBCollectionPartitionMergeOptionalParams MongoDBResourcesListMongoDBCollectionPartitionMergeResponse MongoDBResourcesListMongoDBCollection...
MongoDBResourcesGetMongoUserDefinitionOptionalParams MongoDBResourcesGetMongoUserDefinitionResponse MongoDBResourcesListMongoDBCollectionPartitionMergeHeaders MongoDBResourcesListMongoDBCollectionPartitionMergeOptionalParams MongoDBResourcesListMongoDBCollectionPartitionMergeResponse MongoDBResourcesListMongoDBCollectionsOptional...
A web-based MongoDB admin interface written with Node.js, Express, and Bootstrap 5 Features Connect to multiple databases View/add/delete databases View/add/rename/delete collections View/add/update/delete documents Preview audio/video/image assets inline in the collection view Nested and/or large...
KnownMongoDbAuthenticationType KnownNetezzaPartitionOption KnownNodeSize KnownNodeSizeFamily KnownNotebookParameterType KnownNotebookReferenceType KnownODataAadServicePrincipalCredentialType KnownODataAuthenticationType KnownOraclePartitionOption KnownOrcCompressionCodec KnownParameterType KnownParquetCompressionCodecEnum KnownPhoe...
38.7. MongoDB 操作 - producer 端点 MongoDB 操作 - producer 端点 38.7.1. 查询操作 查询操作 38.7.1.1. findById 38.7.1.2. findOneByQuery 38.7.1.3. 没有查询选择器的示例(返回集合中的第一个文档) 38.7.1.4. 带有查询选择器的示例(返回集合中第一个匹配文档): 38.7.1.5. findAll findAll 38.7.1.5...