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Posted to issues@kylin.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2020/03/05 08:45:00 UTC

[jira] [Commented] (KYLIN-4281) Precisely set the data type of tuple expression

    [ https://issues.apache.org/jira/browse/KYLIN-4281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17051905#comment-17051905 ] 

ASF GitHub Bot commented on KYLIN-4281:
---------------------------------------

kyotoYaho commented on pull request #1144: KYLIN-4281 Precisely set the data type of tuple expression
URL: https://github.com/apache/kylin/pull/1144
 
 
   
 
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> Precisely set the data type of tuple expression
> -----------------------------------------------
>
>                 Key: KYLIN-4281
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4281
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: Zhong Yanghong
>            Assignee: Zhong Yanghong
>            Priority: Major
>
> Previously to simplify the calculating of sum(case when), all of the binary calculation is based on BigDecimal, which is not good for all, especially when dealing with count(distinct case when), whose inner data type may be hll or bitmap.



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