pub type DeltaSafety = SafetyClass;Expand description
Compatibility name retained for the schema-delta API.
Aliased Type§
pub enum DeltaSafety {
FormalOnly,
SchemaMetadata,
Additive,
Conditional,
BackfillRequired,
Destructive,
Opaque,
Unsupported,
}Variants§
FormalOnly
Changes only the formal fact representation, without changing schema behavior.
SchemaMetadata
Changes documentation or other schema metadata only.
Additive
Adds schema behavior without invalidating existing data.
Conditional
Is safe only when separately derived conditions hold.
BackfillRequired
Requires existing data to be populated before the schema change can complete.
Destructive
Can remove or invalidate existing schema or data.
Opaque
Cannot be classified because its provider semantics are opaque.
Unsupported
Has no supported lowering or execution path.