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