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https://issues.apache.org/jira/browse/DRILL-834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14011826#comment-14011826
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Chun Chang commented on DRILL-834:
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And when we eventually exhaust our biggest type, we should throw an error back
indicating it overflowed, and should never silently give wrong result.
> The sum() operator should automatically promote to a type that can hold the
> sum
> -------------------------------------------------------------------------------
>
> Key: DRILL-834
> URL: https://issues.apache.org/jira/browse/DRILL-834
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Operators
> Reporter: Chun Chang
> Assignee: Chun Chang
> Priority: Blocker
>
> The sum() of a type may exceed the type range, hence, should implicitly and
> automatically promote to a type that can hold the sum. Currently, the sum
> just overflows into negative (see JIRA833) and gives wrong result.
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