我的对象看起来像这样:Stats={name:'filters'variants:[{variant:'A'displayed:123actions:[{name:'clicked'triggered:12}]},{variant:'B'displayed:123actions:[{name:'clicked'triggered:12}]}]}我有一个变体数组，里面有一个Action数组。我想为选定的variant和actions.name增加triggered字段。我在meteor.js中使用它。我的查找查询如下所示:Stats.find({name:'filters',varian
我有一个看起来像这样的文档:{"_id":ObjectId("50a8240b927d5d8b5891743c"),"cust_id":"abc","ord_date":ISODate("2012-10-03T18:30:00Z"),"status":"A","price":25,"items":[{"sku":"mmm","qty":5,"price":2.5},{"sku":"nnn","qty":5,"price":2.5}]}现在我想使用$where查询所有"qty">5和"sku"=='mmm'的项目,Itriedthefollowing{"$where":"this.ite
我如何从这个文档集合中传递/*1*/{"F":[{"n":"test1","v":"value1"},{"n":"test2","v":"value2"}],"POR":[{"n":"1test1","v":"1value1"},{"n":"1test2","v":"1value2"},{"n":"1test3","v":"1value3"}]}/*2*/{"F":[{"n":"2test1","v":"2value1"},{"n":"2test2","v":"2value2"}],"POR":[{"n":"2test1","v":"2value1"},{"n":"2test2","v
您好，我可以像这样轻松访问MongoDb中的数据；Jar文件，bson-3.4.2.jar,mongodb-driver-3.4.2.jar,mongodb-driver-async-3.4.2.jar,mongodb-driver-core-3.4.2.jarJavaMongoClientmongoClient=newMongoClient("192.168.56.101",27017);MongoDatabasedatabase=mongoClient.getDatabase("dbTest2");MongoCollectioncollection=database.getColl
我从mongodb开始玩随机温度数据像这样:'weather'=>array('Air'=>array('Jan'=>11,'Feb'=>20,'Mar'=>24,'Jun'=>28,'Jul'=>30)),现在我的问题是:如何查询Air阵列？我知道我可以做类似的事情:$query=array('weather.Air.Jan'=>11);工作正常...但是我如何在整个Air数组中搜索:$query=array('weather.Air.$'=>40);此查询无效...谁能帮帮我 最佳答案 很遗憾，您要查找的查询不存在。如所写，您要
我的Mongoose对象:{"_id":"568ad3db59b494d4284ac191","name":"MyCompany","description":"whatever""items":[{"_id":"568ad3db59b494d4284ac19f","fields":{"Name":"Item1","InternalID":"ID00042","tags":[{"Description":"Tag1","Level":2},{"Description":"Tag2","Level":3}]}},{"_id":"568ad3db59b494d4284ac19f","fie
我在集合'gyms'中有一个文档，如下所示:"name":"Testing","albums":[{"name":"Aerobics","photos":[{"filepath":"aerobics.jpg"}]},{"name":"Aqua","photos":[{"filepath":"aqua.jpg"}]},{"name":"Zumba","photos":[{"filepath":"zumba.jpg"}]}],我想选择每个相册中的照片数量进行投影。所以我的输出看起来像下面这样:"name":"Testing","albums":[{"name":"Aerobics","am
我正在开发一个项目，该项目使用Flask作为后端并从MongoDB数据库发送数据并将其发送到React以在屏幕上打印。在Flash文件中@app.route('/')@app.route('/post')defpost():db=connection.posthubcursor=db.post.find()//makethecursorreturnrender_template('index.html',cursor=cursor)//rendertemplateindex.htmlwithcursor在pug文件中。extendsmainblockcontent|{%forposti
所以在我的数据库中，我有3个集合，它们看起来像这样:客户:customers=[{_id:1,username:"jack",...},{_id:2,username:"jane",...}...]评论:reviews=[{_id:1,customerID:1,message:"mymessage",...}...]评论:comments=[{_id:1,reviewID:1,customerID:2,message:"myresponse"...}...]客户可以发表评论，也可以评论其他评论。所以，我想要的是一个mongodbaggregation查询:检索评论。进行评论的客户的数据
我有以下JSON[{"_id":"5c87e621257db42508007f3b","uuid":"8b03dba7-db96-40d0-8dd9-6a65efd6719a","user_answers":[{"profile_section_code":"MY_PROFILE","profile_question_code":"STANDARD_EDUCATION","selected_answer":["2"]},{"profile_section_code":"MY_PROFILE","profile_question_code":"ETHNICITY","selected_a
