mingmwang commented on PR #4484: URL: https://github.com/apache/arrow-datafusion/pull/4484#issuecomment-1338760893
To remove the `SubqueryAlias` from the logical plan tree, I think there are two approaches: 1. Add a rule and unnest the inner child within `SubqueryAlias`, update the child schema's qualifier name. Need to add a method to logical operator types to update schema's qualifier name. 2. Modify the logical `Column` expr, instead of depending on qualifier/relation name, have it depend on the index, just like the physical `Column` expr. Another approach is to define two types of `Column` exprs : `UnResolvedColumn` and `ResolvedColumn`, `UnResolvedColumn` behaves like the current `Column` expr and depends on the qualifier/relation name, `ResolvedColumn` behaves like the current physical `Column` expr and depends on index. -- 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]
