ethe opened a new issue #979:
URL: https://github.com/apache/arrow-datafusion/issues/979


   `TableProvider` always return all columns in scanning, is it able to 
pushdown selections into `TableProvider` and return the schema after 
selections? I think it may be useful to reduce the memory usage in querying. 
Sorry I am not good at database querying, hope for your reply, thanks.


-- 
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]


Reply via email to