@Override
  public PlanNode clone() {
    // clone without children
    return new CorrelatedJoinNode(
        getPlanNodeId(), null, null, correlation, type, filter, originSubquery);
  }
HACK! Used for error reporting in case this ApplyNode is not supported
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/node/CorrelatedJoinNode.java