Updating Arrays in Documents
Explore how to modify arrays in MongoDB documents by using the $push operator to add elements, the $set operator to update specific array values, and the $unset operator to remove array fields. Understand practical techniques for managing complex data structures within documents.
We'll cover the following...
MongoDB allows adding, removing, or modifying values in arrays with the following operations:
$push: Adds a value to an array$set: Updates a value in an array$unset: Removes a value from an array
Note: We're using the
.limit()method at the backend, so we see a truncated neat output automatically. When running locally, make sure to apply the relevant.find()method to see the updated results.
The scope of modifications made to the data in this lesson is confined to the executables only. The changes won't reflect elsewhere. We'll see ...