# SpanDropRule Drops spans matching a CompleteSpan SQL predicate, along with their descendants. **Type**: `object` ## Properties - name: predicate (required) type: string description: Boolean SQL expression evaluated per span over the CompleteSpan schema. Uses the same fields and functions as head sampling predicates: top-level columns such as servicename, nested fields such as span.operationName, and VARIANT_VALUE(...) for span/resource attributes.