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https://issues.apache.org/jira/browse/FLINK-2985?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15317665#comment-15317665
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ASF GitHub Bot commented on FLINK-2985:
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GitHub user gallenvara opened a pull request:
https://github.com/apache/flink/pull/2078
[FLINK-2985] Allow different field names for unionAll() in Table API
Thanks for contributing to Apache Flink. Before you open your pull request,
please take the following check list into consideration.
If your changes take all of the items into account, feel free to open your
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Contribute guide](http://flink.apache.org/how-to-contribute.html).
In addition to going through the list, please provide a meaningful
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- [X] General
- The pull request references the related JIRA issue ("[FLINK-XXX] Jira
title text")
- The pull request addresses only one issue
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- [X] Tests & Build
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It is not necessary that the corresponding columns in each SELECT statement
have the same name, but they do need to be the same data types. This PR
supports allowing different field names for union/unionAll in Table API.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gallenvara/flink flink-2985
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2078.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 #2078
----
commit e84d836efbb290fb79d14e3d3c6c9e13db567b72
Author: gallenvara <gallenv...@126.com>
Date: 2016-06-06T08:30:41Z
Allow different field names for union in Table API.
----
> Allow different field names for unionAll() in Table API
> -------------------------------------------------------
>
> Key: FLINK-2985
> URL: https://issues.apache.org/jira/browse/FLINK-2985
> Project: Flink
> Issue Type: Improvement
> Components: Table API
> Reporter: Timo Walther
> Priority: Minor
>
> The recently merged `unionAll` operator checks if the field names of the left
> and right side are equal. Actually, this is not necessary. The union operator
> in SQL checks only the types and uses the names of left side.
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