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https://issues.apache.org/jira/browse/DRILL-4529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15213703#comment-15213703
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ASF GitHub Bot commented on DRILL-4529:
---------------------------------------
GitHub user hsuanyi opened a pull request:
https://github.com/apache/drill/pull/447
DRILL-4529: Force $SUM0 to be used when Window Sum is supposed to ret…
…urned non-nullable type
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/hsuanyi/incubator-drill DRILL-4529
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/drill/pull/447.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 #447
----
commit aea449236c30948a88d46eb27a8b886f1d6a0c6f
Author: Hsuan-Yi Chu <[email protected]>
Date: 2016-03-27T23:18:21Z
DRILL-4529: Force $SUM0 to be used when Window Sum is supposed to returned
non-nullable type
----
> SUM() with windows function result in mismatch nullability
> ----------------------------------------------------------
>
> Key: DRILL-4529
> URL: https://issues.apache.org/jira/browse/DRILL-4529
> Project: Apache Drill
> Issue Type: Bug
> Components: Query Planning & Optimization
> Reporter: Krystal
> Assignee: Sean Hsuan-Yi Chu
> Labels: limit0
>
> git.commit.id.abbrev=cee5317
> select
> sum(1) over w sum1,
> sum(5) over w sum5,
> sum(10) over w sum10
> from
> j1_v
> where
> c_date is not null
> window w as (partition by c_date);
> Output from test:
> limit 0: [columnNoNulls, columnNoNulls, columnNoNulls]
> regular: [columnNullable, columnNullable, columnNullable]
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