How to add a new field to and existing collection?

Working with Data
1

when I tried to add a new field using $push it is showing that the value is not defined.

2

Please share your code and a screenshot that shows the exact error message you get.

1 Like
3

If you want to add new field to the documents in an existing collection, you can do it with $set. But as @steevej said, you should update you question with an example and expected output.