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https://issues.apache.org/jira/browse/FLINK-6334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15986832#comment-15986832
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ASF GitHub Bot commented on FLINK-6334:
---------------------------------------
GitHub user Xpray opened a pull request:
https://github.com/apache/flink/pull/3791
[FLINK-6334] [table] Refactoring UDTF interface
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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- [ ] Documentation
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You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Xpray/flink f6334-ready
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3791.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 #3791
----
commit 588781f3267d77c3a8ef80f971c6741fd3aa9a00
Author: Xpray <leonxp...@gmail.com>
Date: 2017-04-27T15:18:19Z
[FLINK-6334] [table] Refactoring UDTF interface
----
> Refactoring UDTF interface
> --------------------------
>
> Key: FLINK-6334
> URL: https://issues.apache.org/jira/browse/FLINK-6334
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Ruidong Li
> Assignee: Ruidong Li
>
> The current UDTF leverages the table.join(expression) interface, which is not
> a proper interface in terms of semantics. We would like to refactor this to
> let UDTF use table.join(table) interface. Very briefly, UDTF's apply method
> will return a Table Type, so Join(UDTF('a, 'b, ...) as 'c) shall be viewed as
> join(Table)
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