MONGODB COMPASS JOIN TWO COLLECTIONS CODE

This makes me think there is a better way for adding fields to a document found by mongoose. To do this, we get the mongo shell source code from the Query Code pane, and put it on the clipboard (Ctrl + A followed by Ctrl + C or using the copy icon as shown below) Now we open up Aggregation Editor and click on the paste button on the right. Write a MongoDB query to display the fields restaurantid, name, borough and cuisine, but exclude the field id for all the documents in the collection restaurant. Go to the editor Click me to see the solution. _doc property of the object: newHabit._doc.progresses = progress (but this has nothing to do with the error I was getting). Write a MongoDB query to display the fields restaurantid, name, borough and cuisine for all the documents in the collection restaurant. In this, you have to specify which collection you want to join with the current collection and select the field that matches in both the collection.

The object has many properties, and the fields from the database are actually contained within the. MongoDB join two collections query In MongoDB, we can combine data of multiple collections into one through the lookup aggregation stage. _id is undefined when it clearly wasn't).Īfter trying lots of things, here is what finally worked: try ) to work, I also found out that I can't just add to a mongoose retrieved object with a spread operator.

I still don't understand why the error came up considering that I used await/async so the line should not have been running before an id was retrieved (the error was saying.

Mongodb compass join two collections