fixup! Prevent accidental treatment of GroupReference as real PlanNode
@@ -1207,7 +1207,7 @@ public class PlanPrinter
{
print(indent, "- GroupReference[%s] => [%s]", node.getGroupId(), formatOutputs(node.getOutputSymbols()));
- return processChildren(node, indent + 1);
+ return null;
}
@Override
