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Posted to issues@flink.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2017/02/01 15:52:51 UTC
[jira] [Commented] (FLINK-5695) Optimize table type systems based
on database semantics
[ https://issues.apache.org/jira/browse/FLINK-5695?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15848540#comment-15848540 ]
ASF GitHub Bot commented on FLINK-5695:
---------------------------------------
GitHub user sunjincheng121 opened a pull request:
https://github.com/apache/flink/pull/3248
Optimize table type systems based on database semantics
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You can merge this pull request into a Git repository by running:
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Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3248.patch
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This closes #3248
----
commit 40917c6433a473f283614d9a928b60fd0a4836a6
Author: Jincheng Sun <su...@gmail.com>
Date: 2017-02-01T15:07:22Z
Optimize table type systems based on database semantics
----
> 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}
> So, I want remove table Type "WindowGroupedTable".
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