[jira] [Resolved] (FLINK-3942) Add support for INTERSECT

["Timo Walther (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-3942?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Timo Walther resolved FLINK-3942.
---------------------------------
       Resolution: Fixed
    Fix Version/s: 1.1.0

Fixed in 815bc833f2c93227c19574119bcf1d00866030b5.

> Add support for INTERSECT
> -------------------------
>
>                 Key: FLINK-3942
>                 URL: https://issues.apache.org/jira/browse/FLINK-3942
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API & SQL
>    Affects Versions: 1.1.0
>            Reporter: Fabian Hueske
>            Assignee: Jark Wu
>            Priority: Minor
>             Fix For: 1.1.0
>
>
> Currently, the Table API and SQL do not support INTERSECT.
> INTERSECT can be executed as join on all fields.
> In order to add support for INTERSECT to the Table API and SQL we need to:
> - Implement a {{DataSetIntersect}} class that translates an INTERSECT into a DataSet API program using a join on all fields.
> - Implement a {{DataSetIntersectRule}} that translates a Calcite {{LogicalIntersect}} into a {{DataSetIntersect}}.
> - Extend the Table API (and validation phase) to provide an intersect() method.



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