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Posted to issues@kylin.apache.org by "nichunen (Jira)" <ji...@apache.org> on 2019/09/18 03:37:00 UTC
[jira] [Resolved] (KYLIN-3392) Support NULL value in Sum, Max, Min
Aggregation
[ https://issues.apache.org/jira/browse/KYLIN-3392?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
nichunen resolved KYLIN-3392.
-----------------------------
Resolution: Fixed
> Support NULL value in Sum, Max, Min Aggregation
> -----------------------------------------------
>
> Key: KYLIN-3392
> URL: https://issues.apache.org/jira/browse/KYLIN-3392
> Project: Kylin
> Issue Type: Bug
> Reporter: Yifei Wu
> Assignee: Yifei Wu
> Priority: Major
> Fix For: v3.0.0-beta, v2.6.4
>
>
> It is treated as 0 when confronted with NULL value in KYLIN's basic aggregate measure (like sum, max, min). However, to distinguish the NULL value with 0 is very necessary.
> It should be like this
> *sum(null, null) = null*
> *sum(null, 1) = 1*
> *max(null, null) = null*
> *max(null, -1) = -1*
> *min(null, -1）= -1*
> in accordance with Hive and SparkSQL
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