[jira] [Resolved] (FLINK-39614) Support TO_CHANGELOG: retract stream -> retract stream with set semantics

["Sergey Nuyanzin (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-39614?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sergey Nuyanzin resolved FLINK-39614.
-------------------------------------
    Fix Version/s: 2.4.0
       Resolution: Fixed

> Support TO_CHANGELOG: retract stream -> retract stream with set semantics
> -------------------------------------------------------------------------
>
>                 Key: FLINK-39614
>                 URL: https://issues.apache.org/jira/browse/FLINK-39614
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / API
>            Reporter: Gustavo de Morais
>            Assignee: Gustavo de Morais
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.4.0
>
>
> TO_CHANGELOG is currently locked to row semantics. The conditional SET_SEMANTIC_TABLE trait declared in FLINK-39392 is never honored at the type-strategy or runtime level, so calling TO_CHANGELOG(input => TABLE t PARTITION BY k) either fails or duplicates the partition key column in the output.
> This ticket adds support for set semantics for retract: when PARTITION BY is provided, the framework prepends the partition key column(s), and the function emits [op, ...non-partition input fields]



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