Github user twalthr commented on the issue:
https://github.com/apache/flink/pull/3923
@shaoxuan-wang the function catalog is case insensitive anyway. With this
PR we have almost no keywords anymore. So a "sum" could be overwritten by "SUM".
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
