<!--
{
  "availability" : [
    "iOS: 10.0.0 -",
    "iPadOS: 10.0.0 -",
    "macCatalyst: 13.1.0 -",
    "macOS: 10.12.0 -",
    "tvOS: 10.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 6.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "CloudKit",
  "identifier" : "/documentation/CloudKit/CKQuerySubscription/predicate",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "CloudKit"
    ],
    "preciseIdentifier" : "c:objc(cs)CKQuerySubscription(py)predicate"
  },
  "title" : "predicate"
}
-->

# predicate

The matching criteria to apply to records.

```
@NSCopying var predicate: NSPredicate { get }
```

## Discussion

A query-based subscription uses its search predicate to identify potential matches for records. It combines the predicate information with the value in the [`querySubscriptionOptions`](/documentation/CloudKit/CKQuerySubscription/querySubscriptionOptions) property to determine when to send a push notification to the app.

The search predicate defines the records that the subscription object monitors for changes. The system only uses the property’s value when the [`subscriptionType`](/documentation/CloudKit/CKSubscription/subscriptionType-swift.property) property is [`CKSubscription.SubscriptionType.query`](/documentation/CloudKit/CKSubscription/SubscriptionType-swift.enum/query). Otherwise, the system ignores it.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)