[jira] [Commented] (FLINK-4549) Test and document implicitly supported SQL functions

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

    [ https://issues.apache.org/jira/browse/FLINK-4549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15493229#comment-15493229 ] 

ASF GitHub Bot commented on FLINK-4549:
---------------------------------------

GitHub user twalthr opened a pull request:

    https://github.com/apache/flink/pull/2500

    [FLINK-4549] [table] Test and document implicitly supported SQL functions

    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 pull request. For more information and/or questions please refer to the [How To Contribute guide](http://flink.apache.org/how-to-contribute.html).
    In addition to going through the list, please provide a meaningful description of your changes.
    
    - [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] Documentation
      - Documentation has been added for new functionality
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    - [x] Tests & Build
      - Functionality added by the pull request is covered by tests
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    This PR tests and documents all SQL functions that are currently supported. Things that are not documented are not supposed to work.

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

    $ git pull https://github.com/twalthr/flink TableApiAllCalciteScalarFunctions

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

    https://github.com/apache/flink/pull/2500.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 #2500
    
----
commit 782fc7c09da25c44ecb61620acf2f7ce9d7077ad
Author: twalthr <tw...@apache.org>
Date:   2016-09-02T09:00:09Z

    [FLINK-4549] [table] Test and document implicitly supported SQL functions

----


> Test and document implicitly supported SQL functions
> ----------------------------------------------------
>
>                 Key: FLINK-4549
>                 URL: https://issues.apache.org/jira/browse/FLINK-4549
>             Project: Flink
>          Issue Type: Improvement
>          Components: Table API & SQL
>            Reporter: Timo Walther
>            Assignee: Timo Walther
>
> Calcite supports many SQL functions by translating them into {{RexNode}} s. However, SQL functions like {{NULLIF}}, {{OVERLAPS}} are neither tested nor document although supported.
> These functions should be tested and added to the documentation. We could adopt parts from the Calcite documentation.



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