[jira] [Commented] (DRILL-2139) Star is not expanded correctly in "select distinct" query

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-2139?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16886901#comment-16886901 ] 

ASF GitHub Bot commented on DRILL-2139:
---------------------------------------

vvysotskyi commented on issue #237: DRILL-2139: Support distinct over star column
URL: https://github.com/apache/drill/pull/237#issuecomment-512196241
 
 
   @hsuanyi, what about the case when a new column appears during reading the table in one of the consequent batches. Will it be handled correctly with the changes in this PR? 
 
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> Star is not expanded correctly in "select distinct" query
> ---------------------------------------------------------
>
>                 Key: DRILL-2139
>                 URL: https://issues.apache.org/jira/browse/DRILL-2139
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 0.8.0
>            Reporter: Victoria Markman
>            Assignee: Sean Hsuan-Yi Chu
>            Priority: Critical
>             Fix For: Future
>
>
> {code}
> 0: jdbc:drill:schema=dfs> select distinct * from t1;
> +------------+
> |     *      |
> +------------+
> | null       |
> +------------+
> 1 row selected (0.14 seconds)
> 0: jdbc:drill:schema=dfs> select distinct * from `test.json`;
> +------------+
> |     *      |
> +------------+
> | null       |
> +------------+
> 1 row selected (0.163 seconds)
> {code}



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