[jira] [Assigned] (HIVE-13963) vectorization - string arguments may be converted to decimal null

["Matt McCline (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HIVE-13963?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt McCline reassigned HIVE-13963:
-----------------------------------

    Assignee:     (was: Matt McCline)

> vectorization - string arguments may be converted to decimal null
> -----------------------------------------------------------------
>
>                 Key: HIVE-13963
>                 URL: https://issues.apache.org/jira/browse/HIVE-13963
>             Project: Hive
>          Issue Type: Bug
>            Reporter: Sergey Shelukhin
>            Priority: Major
>
> See HIVE-13957.
> The default precision and scale for the implicit decimal cast are -max,max, ie 38,38- 38,18. -Those don't do what the code may assume they do. All the values >=1- Some values may become invalid and precision-scale enforcement automatically converts them to null.
> We need to 
> 1) Validate when this happens in/after the conversion code and bail;
> 2) Or, derive precision and scale from the constants themselves so they all fit, instead;
> 3) Or, derive it from the type of whatever caused the conversion in the first place (e.g. IN column decimal); however, this could be function-specific (e.g. IN just needs equality, BETWEEN would need at least one extra digit, arithmetic, if this ever happens, would need everything, etc.);
> 4) Something else? :)



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