mingmwang commented on PR #4185: URL: https://github.com/apache/arrow-datafusion/pull/4185#issuecomment-1318338606
@jackwener The optimization process LGTM. But the processing with Columns might be problematic and could introduce problems. One major problem is within the Column it self, it is not schema aware. So when you collecting Columns up/down the plan tree, in different layers of the plan, the Column with the same name and same type might have different meanings(because of Alias, SubQueryAlias). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
