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Posted to issues@kylin.apache.org by "hongbin ma (JIRA)" <ji...@apache.org> on 2016/02/01 06:59:39 UTC

[jira] [Commented] (KYLIN-1345) measure type expansion when dealing sum of decimal metric

    [ https://issues.apache.org/jira/browse/KYLIN-1345?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15125814#comment-15125814 ] 

hongbin ma commented on KYLIN-1345:
-----------------------------------

hi [~yonzhang2012] do you have a plan for this already? we've witnessed the issue several times, would like to see it fixed ASAP

> measure type expansion when dealing sum of decimal metric
> ---------------------------------------------------------
>
>                 Key: KYLIN-1345
>                 URL: https://issues.apache.org/jira/browse/KYLIN-1345
>             Project: Kylin
>          Issue Type: Improvement
>            Reporter: hongbin ma
>            Assignee: Edward Zhang
>              Labels: newbie
>
> suppose a metric column price is of type decimal (6,2), the sum aggregator of it might exceed the maximal of decimal (6,2). Currently for metric aggregators we inherite the column's type in hive. We should think auto expanding decimal type to decimal(18,4) (just an example) for such cases



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