[jira] [Commented] (SPARK-17494) Floor/ceil of decimal returns wrong result if it's in compact format

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-17494?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15504803#comment-15504803 ] 

Apache Spark commented on SPARK-17494:
--------------------------------------

User 'davies' has created a pull request for this issue:
https://github.com/apache/spark/pull/15154

> Floor/ceil of decimal returns wrong result if it's in compact format
> --------------------------------------------------------------------
>
>                 Key: SPARK-17494
>                 URL: https://issues.apache.org/jira/browse/SPARK-17494
>             Project: Spark
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 1.6.1, 2.0.0
>            Reporter: Gokhan Civan
>            Assignee: Davies Liu
>              Labels: correctness
>
> If you create tables as follows:
> create table a as select 'A' as str, cast(10.5 as decimal(15,6)) as num;
> create table b as select 'A' as str;
> Then
> select floor(num) from a;
> returns 10
> but
> select floor(num) from a join b on a.str = b.str;
> returns 11



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