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https://issues.apache.org/jira/browse/KYLIN-2513?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhixiong Chen updated KYLIN-2513:
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Attachment: 0001-KYLIN-2513-SUM-measure-return-type-should-not-overfl.patch
I have fixed this bug .Please check it .Thanks!
> SUM measure return type should not overflow
> -------------------------------------------
>
> Key: KYLIN-2513
> URL: https://issues.apache.org/jira/browse/KYLIN-2513
> Project: Kylin
> Issue Type: Bug
> Components: Metadata
> Affects Versions: v1.6.0
> Reporter: Billy Liu
> Assignee: hongbin ma
> Attachments:
> 0001-KYLIN-2513-SUM-measure-return-type-should-not-overfl.patch
>
>
> Currently, the SUM measure return type is the same with original table column
> type, that would not work if the original table column has very limit digit
> capability. Take an example, the original column type is decimal(1,0), if we
> SUM on this column, the result will be overflow soon.
> Proposal: Define the return type much more clear. If the original column type
> is decimal with decimal point, no matter what the precision digit is, define
> the return type as decimal(19,4). If the original column type has no decimal
> point，define the return type as decimal(14,0). If the original column is
> integer family, the return type would be bigint.
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