alamb edited a comment on issue #998: URL: https://github.com/apache/arrow-datafusion/issues/998#issuecomment-923155977
Another potential way to implement `UNION` might be to rewrite the logical plan to the equivalent of: `SELECT x from foo UNION select x from bar` --> `SELECT distinct (select x from foo UNION ALL select x from bar)` So as to avoid having to reimplement any physical operators -- 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]
