Lot's a questions on Stack Overflow regarding Mongo DB, Aggregate, and lookup. However, I could not find direct answers to the issue I am struggling with. Suppose we have two collections: Support and Images. The Support document has a property…
I have 3 collections : users [ { _id: 1, username: 'mark' }, { _id: 2, username: 'leon' }, { _id: 3, username: 'leontin'} ] providers [ { _id: 1, name: 'prov1' }, { _id: 2, name: 'prov2' }, {…
I used a $lookup to join a connection There was no problem under normal circumstances. But after using pipeline, the program gives an error :"Unsupported conversion from array to objectId in $convert with no onError value" { $lookup: { from:…
I have an Ansible playbook that is responsible for the creation of items using an API. To check that what I have just created is working I pull status information, post creation, from another API endpoint. I then need to…
I have a requirement to generate a unique 'guid' for each row in the dataverse, and for that, I'm using an additional column in the copy activity as shown below. Since it generates the same guid for every row, I'm…
How can I do a $lookup using wildcard on the foreign key field? The task is to retrieve all records from Transaction where the the desc substring is not found in the Keyword collection. The desc in Transaction could come…
This is a followup question to Draft an aggregate to group based on a nested attribute with lookup There are these two collections as listed below orders: [ { "_id": "64355c928dcce8cdf4b9c7d2", "destinations": [ { "ship_to_id": "64355c92af10d37993473e12", // mongoose id from…
I have a long array which has shorthand ID's which I want to replace with the full values from a lookup Here's the original array const original = [ [ '18', 'v'], [ '20', 'aev'], [ '22', 'v'], [ '23',…
I’ve been trying to get data from collection without using $expr inside $match pipeline stage because it’s less performant and compared to simple $match Here’s a piece of code I’ve been working on: from: 'messages', let: { "iId": "$_id" },…
I am learning on how to use lookup in Flutter, this is an example that I came across. void main() { Map<List<String>, String> lookup = { ['foo', 'bar']: 'foobar', ['baz', 'qux']: 'bazqux', ['hello', 'world']: 'helloworld', }; List<String> key = ['foo',…