<ul><li>In Core Data predicates, optional properties indicate whether the SQLite field can be NULL, not the Swift optional type.</li><li>With SwiftData, optional types in predicates truly represent optionals in Swift, requiring special handling of optional values.</li><li>Force unwrapping with '!' in SwiftData predicates may result in runtime errors even if the developer is confident the property is not nil.</li><li>SwiftData encounters runtime errors when converting predicates containing optional to-many relationships into SQL commands, as of Xcode 15C500b.</li></ul>

Optional Values in SwiftData Predicates

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