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Posted to issues@drill.apache.org by "mehran (JIRA)" <ji...@apache.org> on 2018/04/28 08:45:00 UTC

[jira] [Commented] (DRILL-5201) Query bug: null values in result of a conditioned query

    [ https://issues.apache.org/jira/browse/DRILL-5201?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16457460#comment-16457460 ] 

mehran commented on DRILL-5201:
-------------------------------

I did not encounter this problem in recent releases.

> Query bug: null values in result of a conditioned query  
> ---------------------------------------------------------
>
>                 Key: DRILL-5201
>                 URL: https://issues.apache.org/jira/browse/DRILL-5201
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning &amp; Optimization
>    Affects Versions: 1.9.0
>            Reporter: mehran
>            Assignee: Jinfeng Ni
>            Priority: Critical
>             Fix For: 1.14.0
>
>         Attachments: 20.tar.gz
>
>
> I have a table with 300 columns.
> When I select a query , some null columns are also returned.
> This is the query that I used.
> "select a,b from dfs.root.`/2016/1/17` where a=1"
> For example in this query some columns are returned that "a" value is null.
> I think null values are problems. Because when I add a condition to it like 
> "select a,b from dfs.root.`/2016/1/17` where a=1 and a IS NOT NULL"
> there is not any change and still NULL values are returned.



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