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