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https://issues.apache.org/jira/browse/HIVE-6012?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13845916#comment-13845916
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Sergey Shelukhin commented on HIVE-6012:
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I started a dev alias thread about having ANSI flag to choose between old Hive
mode and ANSI SQL mode
> restore backward compatibility of arithmetic operations
> -------------------------------------------------------
>
> Key: HIVE-6012
> URL: https://issues.apache.org/jira/browse/HIVE-6012
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.13.0
> Reporter: Thejas M Nair
>
> HIVE-5356 changed the behavior of some of the arithmetic operations, and the
> change is not backward compatible, as pointed out in this [jira
> comment|https://issues.apache.org/jira/browse/HIVE-5356?focusedCommentId=13813398&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13813398]
> {code}
> int / int => decimal
> float / float => double
> float * float => double
> float + float => double
> {code}
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