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From "Prasanth Jayachandran (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-20004) Wrong scale used by ConvertDecimal64ToDecimal results in incorrect results
Date Sat, 30 Jun 2018 19:44:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-20004?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16528871#comment-16528871
] 

Prasanth Jayachandran commented on HIVE-20004:
----------------------------------------------

Committed to master and branch-3.

> Wrong scale used by ConvertDecimal64ToDecimal results in incorrect results
> --------------------------------------------------------------------------
>
>                 Key: HIVE-20004
>                 URL: https://issues.apache.org/jira/browse/HIVE-20004
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 3.1.0, 3.0.1, 4.0.0
>            Reporter: Prasanth Jayachandran
>            Assignee: Prasanth Jayachandran
>            Priority: Critical
>             Fix For: 4.0.0, 3.2.0
>
>         Attachments: HIVE-20004.1.patch, HIVE-20004.2.patch, HIVE-20004.3.patch
>
>
> ConvertDecimal64ToDecimal uses scale from output column vector which results in incorrect
results.
> Input: decimal(8,1) Output: decimal(9,2)
> Input value: 963.8 gets converted to 96.38 which is wrong. The scale should not change
this case (value should be 963.8 even after the conversion). 



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