我正在尝试删除此数组中的以下字典:{"ProjectID":"8ToGTAUjT+CbcH68ZYuW8Q==""Tasks":[{"description":"","title":"testcounter","notes":"","percentComplete":"100","completedDate":{"hour":"12","year":"2014","day":"14","minute":"43","month":"11"},"completed":"","ProjectID":"8ToGTAUjT+CbcH68ZYuW8Q==","TaskID":"JxHddpQNSg
我正在尝试删除此数组中的以下字典:{"ProjectID":"8ToGTAUjT+CbcH68ZYuW8Q==""Tasks":[{"description":"","title":"testcounter","notes":"","percentComplete":"100","completedDate":{"hour":"12","year":"2014","day":"14","minute":"43","month":"11"},"completed":"","ProjectID":"8ToGTAUjT+CbcH68ZYuW8Q==","TaskID":"JxHddpQNSg
我正在使用本文所述的typescript实现Mongoose模型:https://github.com/Appsilon/styleguide/wiki/mongoose-typescript-models并且不确定当您使用子文档数组时这是如何翻译的。假设我有以下模型和架构定义:interfaceIPet{name:{type:mongoose.Types.String,required:true},type:{type:mongoose.Types.String,required:true}}export=IPetinterfaceIUser{email:string;passwor
我正在使用本文所述的typescript实现Mongoose模型:https://github.com/Appsilon/styleguide/wiki/mongoose-typescript-models并且不确定当您使用子文档数组时这是如何翻译的。假设我有以下模型和架构定义:interfaceIPet{name:{type:mongoose.Types.String,required:true},type:{type:mongoose.Types.String,required:true}}export=IPetinterfaceIUser{email:string;passwor
我有一个带有子文档的Mongoose模式。父模式和子模式都有预保存Hook。例如:varmongoose=require('mongoose');varSchema=mongoose.Schema;varSubSchema=newSchema({x:Number});SubSchema.pre('save',function(next){console.log("presaveSub");next();});varMainSchema=newSchema({x:Number,children:[SubSchema]});MainSchema.pre('save',function(ne
我有一个带有子文档的Mongoose模式。父模式和子模式都有预保存Hook。例如:varmongoose=require('mongoose');varSchema=mongoose.Schema;varSubSchema=newSchema({x:Number});SubSchema.pre('save',function(next){console.log("presaveSub");next();});varMainSchema=newSchema({x:Number,children:[SubSchema]});MainSchema.pre('save',function(ne
注意:请使用mongodbshell执行代码。假设我有一份学生文档，如下所示{"_id":4,"grades":[{"grade":80,"mean":75,"std":8},{"grade":85,"mean":90,"std":5},{"grade":85,"mean":90,"std":5},{"grade":85,"mean":95,"std":6},{"grade":90,"mean":85,"std":5}]}我们有两个问题:问题1:假设您要更新所有子文档_id=4&&grades.grade=85&&grades.std=5，std=6您将编写如下db.students.
注意:请使用mongodbshell执行代码。假设我有一份学生文档，如下所示{"_id":4,"grades":[{"grade":80,"mean":75,"std":8},{"grade":85,"mean":90,"std":5},{"grade":85,"mean":90,"std":5},{"grade":85,"mean":95,"std":6},{"grade":90,"mean":85,"std":5}]}我们有两个问题:问题1:假设您要更新所有子文档_id=4&&grades.grade=85&&grades.std=5，std=6您将编写如下db.students.
我有这个架构:varParameterSchema=newSchema({id:{type:String,trim:true,default:''},value:{type:String,trim:true,default:''}});我想将它用作子文档，在两个或多个集合中，这些集合在不同的文件中定义，如下所示:文件1varFirstCollectionSchema=newSchema({name:{type:String,trim:true,default:''},parameters:[ParameterSchema]});文件2varSecondCollectionSchema=
我有这个架构:varParameterSchema=newSchema({id:{type:String,trim:true,default:''},value:{type:String,trim:true,default:''}});我想将它用作子文档，在两个或多个集合中，这些集合在不同的文件中定义，如下所示:文件1varFirstCollectionSchema=newSchema({name:{type:String,trim:true,default:''},parameters:[ParameterSchema]});文件2varSecondCollectionSchema=
