Get Started with MongoDB
Rename fields in MongoDB Documents
In this lesson, we learn that renaming fields in MongoDB documents can be accomplished with the $rename operator.
We demonstrate how to use the updateOne method to target a specific document, such as one with the name "Bob Johnson."
By specifying the old field names and their new counterparts, like changing position to title and skills to competence, we can effectively update our document structure.
[00:00] In order to rename properties in an existing Mongo document, we can again use update1 or updateMany. But before we do that, let's search for our favorite object and this is going to be name Bob Johnson. We've got it. So let's run update one. Now, here is the query.
[00:23] We're going to leave it as it is. And here we don't do set, we don't do unset and so on and so forth. We're going to use the rename. And here is the key from value to names of the properties so let's replace the position which is going to become a title whatever and let's also remove the skills with competence or again just a name, so competence. After running this we can see matched one modified one, So let's see Bob Johnson and we've got competence and title as we can see these fields, these properties have been inserted at the end of the document.