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https://issues.apache.org/jira/browse/FLINK-5695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15959057#comment-15959057
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Fabian Hueske commented on FLINK-5695:
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Hi [~sunjincheng121], did you come to a conclusion regarding this issue?
If you agree, we could close this JIRA and the related PR.
Thanks, Fabian
> Optimize table type systems based on database semantics
> -------------------------------------------------------
>
> Key: FLINK-5695
> URL: https://issues.apache.org/jira/browse/FLINK-5695
> Project: Flink
> Issue Type: Sub-task
> Components: Table API & SQL
> Reporter: sunjincheng
> Assignee: sunjincheng
>
> Optimize table type systems based on database semantics.As follows:
> {code}
> groupBy
> -------------------->
> Table GroupedTable
> ∧ <-------------------- ∧
> | select&agg |
> | |
> | where |
> | select | groupBy
> | agg |
> | ... |
> | window |
> ∨ --------------------->
> Table WindowedTable
> <---------------------
> select&over
> {code}
> What do you think? [~fhueske]
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