[jira] [Closed] (FLINK-12846) Carry primary key and unique key information in TableSchema

["Jark Wu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-12846?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jark Wu closed FLINK-12846.
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    Fix Version/s:     (was: 1.10.0)
       Resolution: Duplicate

> Carry primary key and unique key information in TableSchema
> -----------------------------------------------------------
>
>                 Key: FLINK-12846
>                 URL: https://issues.apache.org/jira/browse/FLINK-12846
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table SQL / API
>            Reporter: Jark Wu
>            Assignee: Jark Wu
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> The primary key and unique key is a standard meta information in SQL. And they are important information for optimization, for example, AggregateRemove, AggregateReduceGrouping and state layout optimization for TopN and Join.
> So in this issue, we want to extend {{TableSchema}} to carry more information about primary key and unique keys. So that the TableSource can declare this meta information.



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