alamb opened a new issue #195: URL: https://github.com/apache/arrow-datafusion/issues/195
*Note*: migrated from original JIRA: https://issues.apache.org/jira/browse/ARROW-12266 Improve null handling of SELECT id1, id2 FROM (SELECT null AS id1) t1 INNER JOIN (SELECT 0 AS id2) t2 ON id1 = id2 > NULL, NULL (should be empty result set) We should filter beforehand to make this result correct. Also this can make things more efficient as the non-null filter can be pushed down which can lead to efficiency gains (making data-set smaller, not having to deal with nullable data, or even entire files could be skipped when they only contain nulls). -- 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. For queries about this service, please contact Infrastructure at: [email protected]
