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From "Haohui Mai (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-5624) Support tumbling window on streaming tables in the SQL API
Date Mon, 06 Feb 2017 21:53:41 GMT

    [ https://issues.apache.org/jira/browse/FLINK-5624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15854818#comment-15854818
] 

Haohui Mai commented on FLINK-5624:
-----------------------------------

Thanks for the explanation.

I took a closer look at the built-in function route. Recognizing the function is relatively
straightforward. The problem is that it is difficult for the {{rowtime()}} function to refer
to the corresponding {{DataStream}} at the code generation phase. Probably it might be easier
to add some system / virtual columns instead.

> Support tumbling window on streaming tables in the SQL API
> ----------------------------------------------------------
>
>                 Key: FLINK-5624
>                 URL: https://issues.apache.org/jira/browse/FLINK-5624
>             Project: Flink
>          Issue Type: Bug
>          Components: Table API & SQL
>            Reporter: Haohui Mai
>            Assignee: Haohui Mai
>
> This is a follow up of FLINK-4691.
> FLINK-4691 adds supports for group-windows for streaming tables. This jira proposes to
expose the functionality in the SQL layer via the {{GROUP BY}} clauses, as described in http://calcite.apache.org/docs/stream.html#tumbling-windows.



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