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Posted to issues@flink.apache.org by "Ruidong Li (JIRA)" <ji...@apache.org> on 2017/04/20 10:03:04 UTC
[jira] [Assigned] (FLINK-6334) Refactoring UDTF interface
[ https://issues.apache.org/jira/browse/FLINK-6334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ruidong Li reassigned FLINK-6334:
---------------------------------
Assignee: Ruidong Li
> Refactoring UDTF interface
> --------------------------
>
> Key: FLINK-6334
> URL: https://issues.apache.org/jira/browse/FLINK-6334
> Project: Flink
> Issue Type: Improvement
> Components: Table API & SQL
> Reporter: Ruidong Li
> Assignee: Ruidong Li
>
> The current UDTF leverages the table.join(expression) interface, which is not a proper interface in terms of semantics. We would like to refactor this to let UDTF use table.join(table) interface. Very briefly, UDTF's apply method will return a Table Type, so Join(UDTF('a, 'b, ...) as 'c) shall be viewed as join(Table)
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