there is a document schema that has an array field called "updatedFields" which contains some fields names that you will find in "oldDocument" and "newDocument"
It's been hours since I tried to perform this operation but I couldn't figure it out. Let's say I have a Django project with two classes like these: from django
I came across this problem/question when designing a DCD. I have a generalization products and 2 specializations milk and pizza. I have doubts about if should u
There is an error with the result of aggregation on series with * and where clause.The value of count(root.ln.wf02.wt02.temperature) should be 21 but it turned
I have index with following mapping { "mappings": { "properties": { "typed_obj": { "type": "nested", "pr
I want to implement R's ceiling_date fucntion in SQL (Postgresql). So I have dates in a column for everyday with corresponding sales and I want to accumulate th
var mongoose = require("mongoose"); const Schema = mongoose.Schema; let CryptoJS = require("crypto-js"); function encrypt(text) { try { let ciphertext =
I have a materialized view with the following structure: CREATE MATERIALIZED VIEW events_daily ENGINE = AggregatingMergeTree() ORDER BY ( owner_
What do the diagram's multiplicity values mean? Do they mean each ShoeStore must have 1 instance of NikeShoes, and that the same instance can be part of many S
After some of the aggregation pipeline stages, my MongoDB Document has the following format: { "key": "A", "status": "To Do", "val": 4 }, {
I need to execute a lookup stage on all documents inside an array. The collection: { { "name": "test", "age": 2, "replies": [ {
I have an aggregation written in a MyRepository.kt file which is being called from MongoDataRetriever.kt file in the backend. MyRepository.kt file: import org.s
Playground: https://mongoplayground.net/p/OxMnsCFZpmQ My MongoDB version: 4.2. I have a collection car_parts and customers. As the name suggests car_parts has c
I'm quite new to ElasticSearch aggregations. I want to be able to count how many documents are retrieved with a not null field. Here's what I do to count how m
Location Won Lost Home 3 4 Home 2 3 Home 5 4 Home 4 6 Away 3 4 Away 2 3 Away 5 4 Away 4 6 This is an example table that I have in Power BI. I am trying to cre