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Posted to issues@drill.apache.org by "Jacques Nadeau (JIRA)" <ji...@apache.org> on 2014/06/20 22:28:33 UTC

[jira] [Resolved] (DRILL-1006) Fix case expression when conditions are nullable type.

     [ https://issues.apache.org/jira/browse/DRILL-1006?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jacques Nadeau resolved DRILL-1006.
-----------------------------------

    Resolution: Fixed
      Assignee:     (was: Jinfeng Ni)

> Fix case expression when conditions are nullable type. 
> -------------------------------------------------------
>
>                 Key: DRILL-1006
>                 URL: https://issues.apache.org/jira/browse/DRILL-1006
>             Project: Apache Drill
>          Issue Type: Bug
>            Reporter: Jinfeng Ni
>
> There are two issues in case expressions:
> 1.  ExpressionValidator enforces that the conditions in a case expression have to be non-nullable type.  This is not true ; a condition could be a nullable type from any expression generating boolean value.
> 2. In EvaluationVisitor when we generate the run-time code,  the generated code for case expression when the condition is nullable is not valid, causing compiler error.
>  



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