Github user rxin commented on the pull request:
https://github.com/apache/spark/pull/1136#issuecomment-46635173
To be more specific, I think you can always add a cast that cast the having
expression to boolean, and then we have SimplifyCasts in the optimizer that
would remove unnecessary casts.
---
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 infrastruct...@apache.org or file a JIRA ticket
with INFRA.
---
