$unset
Reference group: Update operator families
What it does
Removes a field.
Syntax
{$unset: { field: "" }}
Use case
Remove deprecated properties.
$unset: practical example
db.users.updateOne({ _id: userId }, { $unset: { legacyField: "" } })💡 Explanation
Removes a field.
When to use it
Remove deprecated properties.
Key Takeaways
- Removes a field.
- Typical use: Remove deprecated properties.