```swift
let p = Post.keys
do {
let result = try await Amplify.DataStore.query(
Post.self,
where: p.rating == nil || p.status == PostStatus.active
)
// result of type [Post]
print("Posts in draft or without rating: \(result)")
} catch let error as DataStoreError {
print("Error listing posts - \(error)")
} catch {
print("Unexpected error \(error)")
}
```
```swift
let p = Post.keys
let sink = Amplify.Publisher.create {
try await Amplify.DataStore.query(
Post.self,
where: p.rating == nil || p.status == PostStatus.active
)
}.sink {
if case let .failure(error) = $0 {
print("Error listing posts - \(error)")
}
}
receiveValue: { result in
// result of type [Post]
print("Posts in draft or without rating: \(result)")
}
```