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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-8838) Add Support for UNNEST a MultiSet type field
Date Fri, 02 Mar 2018 12:14:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-8838?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16383525#comment-16383525

ASF GitHub Bot commented on FLINK-8838:

GitHub user lincoln-lil opened a pull request:


    [FLINK-8838] [table] Add Support for UNNEST a MultiSet type field.

    ## What is the purpose of the change
    *This PR add support for UNNEST a MultiSet type field according to SQL standard UNNEST
a collection value
    (<collection value expression> ::=  <array value expression> | <multiset
value expression>)
    ## Brief change log
    - *Add support for UNNEST a MultiSet type field
    ## Verifying this change
    - *See added unit tests.
    ## Does this pull request potentially affect one of the following parts:
    - Dependencies (does it add or upgrade a dependency): no
    - The public API, i.e., is any changed class annotated with @Public(Evolving): no
    - The serializers: no
    - The runtime per-record code paths (performance sensitive): yes
    - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing,
Yarn/Mesos, ZooKeeper: no
    - The S3 file system connector: no
    ## Documentation
    - Does this pull request introduce a new feature? no
    - If yes, how is the feature documented? JavaDocs

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

    $ git pull https://github.com/lincoln-lil/flink FLINK-8838

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


To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #5619
commit 961582b28ef20bfab1ea47ceb548b6e6e104e1f7
Author: lincoln-lil <lincoln.86xy@...>
Date:   2018-03-02T12:05:44Z

    [FLINK-8838] [table] Add Support for UNNEST a MultiSet type field.


> Add Support for UNNEST a MultiSet type field
> --------------------------------------------
>                 Key: FLINK-8838
>                 URL: https://issues.apache.org/jira/browse/FLINK-8838
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API &amp; SQL
>            Reporter: lincoln.lee
>            Assignee: lincoln.lee
>            Priority: Major
> MultiSetTypeInfo was introduced by  FLINK-7491, and UNNEST support Array type only, 
so it would be nice to support UNNEST a MultiSet type field.

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