[jira] [Commented] (FLINK-4686) Add possibility to get column names

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

    [ https://issues.apache.org/jira/browse/FLINK-4686?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15689841#comment-15689841 ] 

ASF GitHub Bot commented on FLINK-4686:
---------------------------------------

Github user twalthr commented on the issue:

    https://github.com/apache/flink/pull/2553
  
    Thanks @wuchong. I think we can convert the modified ITCases to TableTestBase tests. I will try it and merge this.


> Add possibility to get column names
> -----------------------------------
>
>                 Key: FLINK-4686
>                 URL: https://issues.apache.org/jira/browse/FLINK-4686
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API & SQL
>            Reporter: Timo Walther
>            Assignee: Jark Wu
>              Labels: starter
>
> For debugging and maybe for visualization in future (e.g. in a shell) it would be good to have the possibilty to get the names of {{Table}} columns. At the moment the user has no idea how the table columns are named; if they need to be matched with POJO fields for example.
> My suggestion:
> {code}
> Schema s = table.schema();
> TypeInformation<?> type = s.getType(1);
> TypeInformation<?> type = s.getType("col");
> String s = s.getColumnName(1);
> String[] s = s.getColumnNames();
> {code}



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