[
https://issues.apache.org/jira/browse/SPARK-47397?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Martin Rueckl updated SPARK-47397:
----------------------------------
Attachment: image-2024-03-14-16-13-03-107.png
> count_distinct ignores null values
> ----------------------------------
>
> Key: SPARK-47397
> URL: https://issues.apache.org/jira/browse/SPARK-47397
> Project: Spark
> Issue Type: Bug
> Components: Documentation, Spark Core
> Affects Versions: 3.4.1
> Reporter: Martin Rueckl
> Priority: Critical
> Attachments: image-2024-03-14-16-12-35-267.png,
> image-2024-03-14-16-13-03-107.png
>
>
> The documentation states, that in group by and count statements, null values
> will not be ignored / form their own groups.
> !image-2024-03-14-16-09-20-045.png|width=441,height=327!
> However, the behavior of count_distinct does not account for nulls.
> Either the documentation or the implementation is wrong here...
> !image-2024-03-14-16-12-35-267.png!
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscr...@spark.apache.org
For additional commands, e-mail: issues-h...@spark.apache.org
