我正在使用MongoDB和SpringBoot2.0.1.RELEASE。一切似乎都运行良好。我能够使用MongoRepository正确执行CRUD操作。当我像这样使用mongodb查询时@Query(value="{address.city:?0}")publicListfindByCity(Stringcity);@Query(value="{address.country:?0}")publicListfindByCountry(Stringcountry);当我尝试使用urllocalhost:8090/hotels/address/city/Rome访问数据时，我收到以下响
我正在尝试解决在SqlServer中需要公用表表达式或子查询的问题。我有一个名为Invoice_Details的集合。每个文档都有一个InvoiceID、CustomerID、TransactionDate和TransactionAmount字段。我想要做的是取回当TransactionAmount聚合时不等于零的所有文档。我正在做如下分组:db.Invoice_Details.aggregate([{$group:{_id:{InvoiceID:"$InvoiceID"},Balance:{$sum:"$TransactionAmount"}}},{$match:{Balance:{
我有用户的集合，这是以下文件:{"_id":1,"name":"A","online":1,"like":10,"score":1},{"_id":2,"name":"B","online":0,"like":9,"score":0},{"_id":3,"name":"C","online":0,"like":8,"score":1},{"_id":4,"name":"D","online":1,"like":8,"score":0},{"_id":5,"name":"E","online":1,"like":7,"score":1},{"_id":6,"name":"F","onli
我有一个csv文件，其中包含如下字符串格式的数组:date,name,criteria2018-05-16,John,"[{'age':35},{'birthyear':1983}]"2018-05-16,Jane,"[{'age':36},{'birthyear':1982}]"我正在使用带有pandas和numpy的Python来处理这个问题我需要按以下格式将此文件导入MongoDB集合:{"date":'2018-05-16',"name":"John","criteria":[{"age":35},{"birthyear":1983}]},{"date":'2018-05-16
我正在使用如下聚合:finalListaggregations=newArrayList();Polygonpolygon=newPolygon(newPoint(-26.28125,42.19231862526141),newPoint(100.28125,64.7157757187955),newPoint(100.28125,42.19231862526141),newPoint(-26.28125,64.7157757187955));AggregationOperationmatch=newMatchOperation(Criteria.where("location").w
我想使用Jest为GraphQL解析器编写测试，但真的不知道从哪里开始。解析器是使用NodeJS上的Mongoose写入MongoDB数据库的简单CRUD函数。类型:typeArticle{_id:ID!title:Stringauthors:[User]}查询extendtypeQuery{articles:[Article]article(_id:ID!):Article}解析器(只读)Query:{articles:()=>newPromise((resolve,reject)=>{Article.find({},(err,articles)=>{if(err)reject(er
我想启动这个MongoDB副本集:version:"3"services:mongo1:image:mongoports:-27017:27017command:mongod--replSetrs0mongo2:image:mongoports:-27018:27017command:mongod--replSetrs0mongo3:image:mongoports:-27019:27017command:mongod--replSetrs0等待它们出现，然后通过终端访问Mongoshell:dockerexec-itmongo1mongo然后在Mongoshell中执行:rs.ini
在我的项目中，我使用了spring-boot和嵌入式MongoDb，查看我的pom.xml文件:4.0.0com.defaultdefault0.0.1-SNAPSHOTjardefaultDemoprojectforSpringBootorg.springframework.bootspring-boot-starter-parent2.0.1.RELEASEUTF-8UTF-81.7truede.flapdoodle.embedde.flapdoodle.embed.mongo1.50.5cz.jirutka.springembedmongo-springRELEASEorg.sp
我将MongoDB与SpringBoot2.0和SpringData结合使用。我对MongoDB有以下请求{"cra":"test-cra","service":"test-service","timestamp":"2012-04-23T18:25:43.511Z","parameters":[{"name":"test-param-name1","value":"test-param-value1"}]}在MongoDB中，例如我有以下文档:{"cra":"test-cra","service":"test-service","timestamp":"2012-04-23T18:2
如何从具有以下结构的Mongo文档的数组中获取一个元素:{array:[{type:'cat',name:'George'}{type:'cat',name:'Mary'}{type:'dog',name:'Steve'}{type:'dog',name:'Anna'}]}例如我需要得到史蒂夫，在这种情况下结果必须是这样的:{array:[{type:'dog',name:'Steve'}]}左右:{type:'dog',name:'Steve'}我知道如何在发布时制作它，但我需要在整个数组可用的客户端制作它，我可以使用forEach从数组返回这个值，但我正在寻找更优雅的方式(使用Mo
