[jira] [Commented] (DRILL-4906) CASE Expression with constant generates class exception

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

    [ https://issues.apache.org/jira/browse/DRILL-4906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15526343#comment-15526343 ] 

ASF GitHub Bot commented on DRILL-4906:
---------------------------------------

GitHub user Serhii-Harnyk opened a pull request:

    https://github.com/apache/drill/pull/598

    DRILL-4906 CASE Expression with constant generates class exception

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/Serhii-Harnyk/drill DRILL-4906

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/drill/pull/598.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #598
    
----
commit 46f0df7cf89fff8e7d8cf9a21a810e1b4e292bce
Author: Serhii-Harnyk <se...@gmail.com>
Date:   2016-09-22T12:06:10Z

    DRILL-4906 CASE Expression with constant generates class exception

----


> CASE Expression with constant generates class exception
> -------------------------------------------------------
>
>                 Key: DRILL-4906
>                 URL: https://issues.apache.org/jira/browse/DRILL-4906
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: SQL Parser
>    Affects Versions: 1.6.0, 1.8.0
>            Reporter: Serhii Harnyk
>            Assignee: Serhii Harnyk
>             Fix For: 1.9.0
>
>
> How to reproduce:
> select (case when (true) then 1 end) from (values(1));
> Error
> Error: SYSTEM ERROR: ClassCastException: org.apache.drill.exec.expr.holders.NullableVarCharHolder cannot be cast to org.apache.drill.exec.expr.holders.VarCharHolder



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