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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-4420) Introduce star(*) to select all of the columns in the table
Date Thu, 18 Aug 2016 05:18:20 GMT

    [ https://issues.apache.org/jira/browse/FLINK-4420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15425912#comment-15425912
] 

ASF GitHub Bot commented on FLINK-4420:
---------------------------------------

GitHub user wuchong opened a pull request:

    https://github.com/apache/flink/pull/2384

    [FLINK-4420] [table] Introduce star(*) to select all of the columns in the table

    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
      - Each commit in the PR has a meaningful commit message (including the JIRA id)
    
    - [x] Documentation
      - Documentation has been added for new functionality
      - Old documentation affected by the pull request has been updated
      - JavaDoc for public methods has been added
    
    - [x] Tests & Build
      - Functionality added by the pull request is covered by tests
      - `mvn clean verify` has been executed successfully locally or a Travis build has passed
    
    When we have many columns in a table, it's easy to select all the columns if we support
select *.
    
    In Scala: 
    
    ```scala
    val result = table.select('*);
    ```
    
    In Java:
    
    ```java
    Table result = table.select("*");
    ```
    
    In addition, I add some constrains for field alias. Forbid `*` as a field name.
    


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

    $ git pull https://github.com/wuchong/flink star

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

    https://github.com/apache/flink/pull/2384.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 #2384
    
----
commit e0ec9ba3b76ab8325af0fb6822851fab2cc7598a
Author: Jark Wu <wuchong.wc@alibaba-inc.com>
Date:   2016-08-18T05:08:01Z

    [FLINK-4420] [table] Introduce star(*) to select all of the columns in the table

----


> Introduce star(*) to select all of the columns in the table
> -----------------------------------------------------------
>
>                 Key: FLINK-4420
>                 URL: https://issues.apache.org/jira/browse/FLINK-4420
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API & SQL
>            Reporter: Jark Wu
>            Assignee: Jark Wu
>
> When we have many columns in a table, it's  easy to select all the columns if we support
{{select *}}.



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