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https://issues.apache.org/jira/browse/KYLIN-4281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17370181#comment-17370181
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ASF subversion and git services commented on KYLIN-4281:
--------------------------------------------------------

Commit f5fbe9e0c64935ae3284c8e877c1834f0a3d3663 in kylin's branch 
refs/heads/kylin-on-parquet-v2 from yaqian.zhang
[ https://gitbox.apache.org/repos/asf?p=kylin.git;h=f5fbe9e ]

Revert "KYLIN-4281 Precisely set the data type of tuple expression"

This reverts commit 5044239a


> 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
>             Fix For: v3.1.0
>
>
> 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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