Refactor some method and PlanNodeType - #17918

Check warning on line 413 in iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/relational/planner/RelationPlanner.java

sonarqubecloud / SonarCloud Code Analysis

Immediately return this expression instead of assigning it to the temporary variable "qualifiedObjectName".

See more on https://sonarcloud.io/project/issues?id=apache_iotdb&issues=AZ62NlemsvfB9vMHqJiX&open=AZ62NlemsvfB9vMHqJiX&pullRequest=17918