alamb opened a new issue #1406: URL: https://github.com/apache/arrow-datafusion/issues/1406
As pointed out by @xudong963 on #1376, there are several other rewrite rules we could add following the pattern in simplify: ``` A AND !(A) --> false (if A is not nullable) ``` Note that if `A` is null (or some expresson that could be null), then `A AND !(A)` is NULL Similarly, ``` A * 0 --> 0 (if A is not nullable) ``` The "is nullable" bit is somewhat tricky -- and to be honest I am not sure our current code handles all such cases correctly either. -- 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]
