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