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Showing posts with the label Aggregation Framework

How To Find Documents With Exactly The Same Array Entries As In A Query

I have documents in a collection, looking like this: [ { userId: 1, itemsIds: [399957190,… Read more How To Find Documents With Exactly The Same Array Entries As In A Query

Reshape Array That Is Stored In A Collection And Export To Csv

I have a collection of Facebook Page Likes (titled pagelikes) that is stored in a Mongo database/JS… Read more Reshape Array That Is Stored In A Collection And Export To Csv

Mongoose - Aggregation $match Based On Enum Values

I have an aggregation with mongoose, the objects what i get looks like this: foods: { fruits: {… Read more Mongoose - Aggregation $match Based On Enum Values

$filter Upto 3 Nested Level In Mongodb

I have a below collection [ { 'Array1': [ { 'Array2': [ … Read more $filter Upto 3 Nested Level In Mongodb

Is It Possible To Use Query Projection On The Same Collection That Has A $elemmatch Projection?

I understand that you can limit the items in a subcollection array using $elemMatch as a projection… Read more Is It Possible To Use Query Projection On The Same Collection That Has A $elemmatch Projection?

How To Get Data From MongoDB To Simple Array Using Node.JS And Mongoose?

Let's say this is my MongoDB schema: var shopSchema = new mongoose.Schema({ nameSho… Read more How To Get Data From MongoDB To Simple Array Using Node.JS And Mongoose?

Mongodb - Unwinding Nested Subdocuments

For the following dataset example: lists { _id: 1, included_lists: [ 2 ], items: [ 'i1' ]} … Read more Mongodb - Unwinding Nested Subdocuments