[jira] [Commented] (DRILL-3943) CannotPlanException caused by ExpressionReductionRule

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

    [ https://issues.apache.org/jira/browse/DRILL-3943?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14960300#comment-14960300 ] 

ASF GitHub Bot commented on DRILL-3943:
---------------------------------------

GitHub user hsuanyi opened a pull request:

    https://github.com/apache/drill/pull/206

    DRILL-3943: In constant folding, when the the data type of the return…

    … value is TimeStamp, generate TimeStamp Literal

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

    $ git pull https://github.com/hsuanyi/incubator-drill DRILL-3943

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

    https://github.com/apache/drill/pull/206.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 #206
    
----
commit 74267c226cd447c98b36df8ef44f4121ef581c90
Author: Hsuan-Yi Chu <hs...@usc.edu>
Date:   2015-10-15T03:55:34Z

    DRILL-3943: In constant folding, when the the data type of the return value is TimeStamp, generate TimeStamp Literal

----


> CannotPlanException caused by ExpressionReductionRule
> -----------------------------------------------------
>
>                 Key: DRILL-3943
>                 URL: https://issues.apache.org/jira/browse/DRILL-3943
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>            Reporter: Sean Hsuan-Yi Chu
>            Assignee: Sean Hsuan-Yi Chu
>             Fix For: 1.3.0
>
>
> For a query such as:
> {code}
> SELECT count(DISTINCT employee_id) as col1,
> count((to_number(date_diff(now(), cast(birth_date AS date)),'####'))) as col2
> FROM cp.`employee.json`
> {code}
> cannot plan exception will be thrown because ExpressionReductionRule does not properly simply the call "now()".
> This issue is similar to DRILL-2808, but that one focuses on error message.



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