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From "Zhong Yanghong (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (KYLIN-3360) Support count(column)
Date Sun, 13 May 2018 07:04:00 GMT

    [ https://issues.apache.org/jira/browse/KYLIN-3360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16473383#comment-16473383
] 

Zhong Yanghong edited comment on KYLIN-3360 at 5/13/18 7:03 AM:
----------------------------------------------------------------

Here, for simplification, the column can only be from fact tables. Otherwise, the result is
the same as count().


was (Author: yaho):
Here, for simplification, the column can only be from root fact tables. Otherwise, the result
is the same as count().

> Support count(column)
> ---------------------
>
>                 Key: KYLIN-3360
>                 URL: https://issues.apache.org/jira/browse/KYLIN-3360
>             Project: Kylin
>          Issue Type: Sub-task
>            Reporter: Zhong Yanghong
>            Assignee: Zhong Yanghong
>            Priority: Major
>
> If the value of the column is null, the related row should not be counted. 
> count(column) can be explained as sum(case when column is not null then 1 else 0), which
can be will be supported by [KYLIN-3359]



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