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Shaofeng SHI commented on KYLIN-3392: ------------------------------------- Related PR: [https://github.com/apache/kylin/pull/819] > 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 > > 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 -- This message was sent by Atlassian Jira (v8.3.2#803003)