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https://issues.apache.org/jira/browse/DRILL-6710?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16593412#comment-16593412
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Volodymyr Vysotskyi commented on DRILL-6710:
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Taking into account the majority of the projects which support only
non-negative scale and limitations of current implementation for negative
scale, I agree with you that we should also prevent usage of negative scale.
Currently, it may appear as the result of some math functions.
[~rhou], Drill has a little bit different way for trimming scale. This formula
also may return a negative scale, if {{precision}} is less then {{max(p1 – s1,
p2 – s2)}}.
> Drill C++ Client does not handle scale = 0 properly for decimal
> ---------------------------------------------------------------
>
> Key: DRILL-6710
> URL: https://issues.apache.org/jira/browse/DRILL-6710
> Project: Apache Drill
> Issue Type: Bug
> Components: Execution - Relational Operators
> Affects Versions: 1.14.0
> Reporter: Robert Hou
> Assignee: Sorabh Hamirwasia
> Priority: Major
> Fix For: 1.15.0
>
>
> Query is:
> select cast('999999999999999999' as decimal(18,0)) +
> cast('9999999999999999999999999999999999999' as decimal(38,0)) from data
> limit 1
> This is the error I get when my test program calls SQLExecDirect:
> The driver reported the following diagnostics whilst running SQLExecDirect
> HY000:1:40140:[MapR][Support] (40140) Scale can't be less than zero.
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