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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-2951) Add Union operator to Table API.
Date Tue, 03 Nov 2015 02:33:27 GMT

    [ https://issues.apache.org/jira/browse/FLINK-2951?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14986540#comment-14986540
] 

ASF GitHub Bot commented on FLINK-2951:
---------------------------------------

Github user ChengXiangLi commented on the pull request:

    https://github.com/apache/flink/pull/1315#issuecomment-153220339
  
    Thanks, @twalthr , i've updated the UT to use `collect()` instead of writing to disk.
Besides, about the documentation, i found there is no other operator description on Table
API page as well, so i created a seperate JIRA https://issues.apache.org/jira/browse/FLINK-2955
to add introduction for all supported operators.


> Add Union operator to Table API.
> --------------------------------
>
>                 Key: FLINK-2951
>                 URL: https://issues.apache.org/jira/browse/FLINK-2951
>             Project: Flink
>          Issue Type: New Feature
>          Components: Documentation, Table API
>            Reporter: Chengxiang Li
>            Assignee: Chengxiang Li
>            Priority: Minor
>
> Currently, union operation is supported by DataSet/DataStream API, not available in Table
API. To union two tables, user has to transform the parameter input to DataSet/DataStream,
for example:
> {code:java}
> val unionDs = left.union(right.toDataSet[Row])
> {code}
> It should be more API friendly to user if add union operation to Table API, like:
> {code:java}
> val unionDs = left.union(right)
> {code}



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