Github user arina-ielchiieva commented on the issue:
https://github.com/apache/drill/pull/996
@paul-rogers thanks for approving pull request but actually before merging
these changes in Drill (since I am not still convinced we need them), I was
expecting @HanumathRao to do investigation if newer Calcite versions handle
this case, if yes, maybe postpone this changes till the Calcite upgrade or
cherry-pick them in Drill Calcite (if urgent). If not, create Jira in Calcite
project and provide fix, and maybe cherry-pick this very fix once done (again
if urgent). Since if all these checks can be done in Calcite we don't need to
customize Drill.
---
