我有以下3个集合:1.runs:{"_id":ObjectId("5cda6191e1b7c889e0442dff"),"status":1,"runName":"MyRunTest01"}2.runsets:{"_id":ObjectId("5cda6191e1b7c889e0442e01"),"_run":ObjectId("5cda6191e1b7c889e0442dff"),"config":"Config1","suites":[{"_id":"ObjectId(5cda6191e1b7c889e0442e03"),"suiteid":ObjectId("5c748822e0
从this开始问题，我希望根据相关子文档中的值过滤父文档列表。给定以下mongoDB集合....//'job'collection{"id":j1,"mediaID":"ABC1234"},{"id":j2,"mediaID":"DEF1234"}..和..//'task'collection//j1tasks{"id":"t1","job":"j1","taskName":"MOVE","status":"COMPLETE"},{"id":"t2","job":"j1","taskName":"PUBLISH","status":"FAILED"},//j2tasks{"id":"t
当存在一个可能为空的数组时，我遇到了组问题。集合可能是这样的:{"_id":"Contract_1","ContactId":"Contact_1","Specifications":[]}{"_id":"Contract_2","ContactId":"Contact_2","Specifications":[{"Description":"Descrizione1","VehicleId":"Vehicle_1","Customizations":[{"Description":"Randomfurniture","ContactId":"Contact_5"},{"Descrip
我正在尝试获取MongoDB中某个键的所有不同值的计数。我也得到了计数，但我得到了2个不同的对象。{"_id":ObjectId("596f6e95b6a1aa8d363befeb"),produce:"potato","variety":"abc","state":'PA'}{"_id":ObjectId("596f6e95b6a1aa8d363befec"),produce:"potato","variety":"abc","state":'PA'}{"_id":ObjectId("596f6e95b6a1aa8d363befed"),produce:"potato","varie
给定以下虚拟集合，我想提取给定资源的导出国和进口国:[{country:"France",exchange:{export:[{resource:"MILK",origin:["Toulouse","Bordeaux"]}],import:[{resource:"BEEF",origin:["Lyon","Marseille"]}]}},{country:"Spain",exchange:{export:[{resource:"PORK",origin:["Madrid","Barcelona"]}],import:[{resource:"MILK",origin:["Valencia
我正在使用C#以及MongoDB。我有一节课可以与此类似。它是一个示例，代表了一些东西，请不要评论类设计[CollectionName("Venues")]publicclassVenue{publicstringName{get;set;}publicdictionaryProperties{get;set;}}varvenue=newVenue{Name="Venue1",Properties=newDictionary{{"Chairs","18"},{"Tables","4"},{"HasWaterfall",true}}}假设我在集合中有一个对象，它看起来像这样。我想找出有可
我正在创建一个仪表板表来显示mongoDB中保存的数据。我已经有一个表并显示表中的所有数据，现在我想要实现的是在数据库表上方创建一个select元素select元素应该包含所有mongodb的可用日期。例如，我有20个相同的日期05/25/2019和10个相同的日期05/26/2019和30个相同的日期05/29/2019我只想显示上述日期在select元素中提到的三个选项。如果在数据库中添加了另一个日期，该日期也应该显示在option上。我尝试对我的选择选项做与我在表上所做的相同的事情，但当然就像表中的数据一样，它显示所有相同的日期所以我有60个选项，其中3005/29/2019和1
创建集合“test”，并向其中插入一个文档:{"_id":NumberLong(1),"pointsBalances":[{"period":"2020","startDate":ISODate("2020-01-01T00:00:00.000Z"),"endDate":ISODate("2020-12-31T23:59:59.999Z"),"value":0},{"period":"2019","startDate":ISODate("2019-01-01T00:00:00.000Z"),"endDate":ISODate("2019-12-31T23:59:59.999Z"),"v
我正在尝试对来自mongoDB集合(使用nodeJS驱动程序)的多个字段中的数组中的唯一值进行排序。一个小数据集:[{"_id":"5c93db3dd0184516406013f7","filters":{"genres":[{"_id":"9CXBYc4qP8sqcNMZ5","fr":"ArtAbstrait","en":"AbstractArt","de":"AbstrakteKunst","it":"Arteastratta","es":"ArteAbstracto"}],"subjects":[{"_id":"3QjL6YSfmuY6NFHGG","fr":"Abstrait
运行find()时我无法让mongoose显示子文档，而它在mongodbshell中显示得很好。子文档应该根据我的模式嵌入，而不是引用objectId，所以我不应该运行任何黑魔法巫术来显示我的数据。constUserSchema=newmongoose.Schema({username:String;xp:Number;//etc.});constRoomSchema=newmongoose.Schema({timestamp:{type:Date,default:Date.now},status:{type:String,enum:["pending","ongoing","com
