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From "Fabian Hueske (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-7798) Add support for windowed joins to Table API
Date Wed, 11 Oct 2017 14:15:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-7798?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16200344#comment-16200344
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Fabian Hueske commented on FLINK-7798:
--------------------------------------

Yes, it's a bit of effort to get all the pieces that we would need for the conversion.
Moreover, I identified another problem. At this level, join predicates might also be present
in a Filter that succeeds the Join operator.

Let's just remove the check for the StreamExecutionEnvironment, add plan validation tests,
and adapt the documentation.

> Add support for windowed joins to Table API
> -------------------------------------------
>
>                 Key: FLINK-7798
>                 URL: https://issues.apache.org/jira/browse/FLINK-7798
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table API & SQL
>    Affects Versions: 1.4.0
>            Reporter: Fabian Hueske
>            Assignee: Xingcan Cui
>            Priority: Critical
>             Fix For: 1.4.0
>
>
> Currently, windowed joins on streaming tables are only supported through SQL.
> The Table API should support these joins as well. For that, we have to adjust the Table
API validation and translate the API into the respective logical plan. Since most of the code
should already be there for the batch Table API joins, this should be fairly straightforward.



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