Hi Follower, Please review this PR, So that we can make some improvements. Thank you.
The PR：https://github.com/apache/calcite/pull/2495 The ISSUE: https://issues.apache.org/jira/projects/CALCITE/issues/CALCITE-4486 <https://issues.apache.org/jira/projects/CALCITE/issues/CALCITE-4486>
