[GitHub] mgaido91 opened a new pull request #23315: [SPARK-26366][SQL] ReplaceExceptWithFilter should consider NULL as False

[GitBox <gi...@apache.org>]

mgaido91 opened a new pull request #23315: [SPARK-26366][SQL] ReplaceExceptWithFilter should consider NULL as False
URL: https://github.com/apache/spark/pull/23315
 
 
   ## What changes were proposed in this pull request?
   
   In `ReplaceExceptWithFilter` we do not consider the case in which the condition returns NULL. Indeed, in that case, negating NULL still returns NULL, so it is not true the assumption that negating the condition returns all the rows which didn't satisfy it: rows returning NULL are not returned.
   
   The PR fixes this problem by returning False for the condition when it is Null. In this way we do return all the rows which didn't satisfy it.
   
   ## How was this patch tested?
   
   added UTs

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services

---------------------------------------------------------------------
To unsubscribe, e-mail: reviews-unsubscribe@spark.apache.org
For additional commands, e-mail: reviews-help@spark.apache.org