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Posted to issues@kylin.apache.org by "Chao Long (JIRA)" <ji...@apache.org> on 2019/04/12 02:23:00 UTC

[jira] [Resolved] (KYLIN-3946) No cube for AVG measure after include count column

     [ https://issues.apache.org/jira/browse/KYLIN-3946?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chao Long resolved KYLIN-3946.
------------------------------
       Resolution: Fixed
    Fix Version/s:     (was: v2.6.2)
                   Future

> No cube for AVG measure after include count column
> --------------------------------------------------
>
>                 Key: KYLIN-3946
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3946
>             Project: Kylin
>          Issue Type: Bug
>          Components: Query Engine
>            Reporter: Chao Long
>            Assignee: Chao Long
>            Priority: Major
>             Fix For: Future
>
>
> Before, avg(col) will use sum(col)/count(1) to calculate.
> After including count column aggregation KYLIN-3883, avg(col) will use sum(col)/count(col) to calculate. 
> If there is no predefined count(col) measure, query with avg(col) will get exception "NoRealizationFoundException: No realization found for OLAPContext", which will effect the query on old cubes. So we should consider compatibility.



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