---
title: kMDQueryDidUpdateNotification
framework: coreservices
role: collectionGroup
role_heading: API Collection
path: coreservices/file_metadata/mdquery/kmdquerydidupdatenotification
---

# kMDQueryDidUpdateNotification

Indicates that a query’s results list has change during the live-update phase of a query.

## Overview

Overview The info dictionary of the notification can contain kMDQueryUpdateAddedItems, kMDQueryUpdateChangedItems, and kMDQueryUpdateRemovedItems keys.  This notification is only sent to the application’s notification center.

## Topics

### Constants

- [kMDQueryDidUpdateNotification](coreservices/kmdquerydidupdatenotification.md)

## See Also

### Notifications

- [kMDQueryDidFinishNotification](coreservices/file_metadata/mdquery/kmdquerydidfinishnotification.md)
- [kMDQueryProgressNotification](coreservices/file_metadata/mdquery/kmdqueryprogressnotification.md)