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https://issues.apache.org/jira/browse/FLINK-3941?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Fabian Hueske closed FLINK-3941.
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Resolution: Implemented
Fix Version/s: 1.1.0
Implemented with ef5832d8f5867826a60f87e2fcaef912dc2950f6
> Add support for UNION (with duplicate elimination)
> --------------------------------------------------
>
> Key: FLINK-3941
> URL: https://issues.apache.org/jira/browse/FLINK-3941
> Project: Flink
> Issue Type: New Feature
> Components: Table API
> Affects Versions: 1.1.0
> Reporter: Fabian Hueske
> Assignee: Yijie Shen
> Priority: Minor
> Fix For: 1.1.0
>
>
> Currently, only UNION ALL is supported by Table API and SQL.
> UNION (with duplicate elimination) can be supported by applying a
> {{DataSet.distinct()}} after the union on all fields. This issue includes:
> - Extending {{DataSetUnion}}
> - Relaxing {{DataSetUnionRule}} to translated non-all unions.
> - Extend the Table API with union() method.
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