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From "Chun Chang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DRILL-834) The sum() operator should automatically promote to a type that can hold the sum
Date Wed, 28 May 2014 23:40:01 GMT

    [ https://issues.apache.org/jira/browse/DRILL-834?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14011826#comment-14011826
] 

Chun Chang commented on DRILL-834:
----------------------------------

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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