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https://issues.apache.org/jira/browse/FLINK-41273?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ramin Gharib updated FLINK-41273:
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Release Note: The Table API now supports {{union}}, {{intersect}},
{{intersectAll}}, {{minus}} and {{minusAll}} on unbounded tables. Previously
these threw a {{ValidationException}} in streaming mode. They keep state per
distinct row, so consider a state TTL for long-running queries. The SQL
serialization of {{minus}} now emits {{EXCEPT}} instead of {{MINUS}}, which
Flink SQL could not parse.
> Allow UNION, INTERSECT and EXCEPT on unbounded tables in the Table API
> ----------------------------------------------------------------------
>
> Key: FLINK-41273
> URL: https://issues.apache.org/jira/browse/FLINK-41273
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / API
> Reporter: Timo Theusner
> Assignee: Timo Theusner
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.5.0
>
>
> In streaming mode, {{SetOperationFactory#failIfStreaming}} rejects {{union}},
> {{intersect}}, {{intersectAll}}, {{minus}} and {{minusAll}}, although
> streaming SQL runs {{UNION}}, {{INTERSECT}} and {{EXCEPT}} with the same
> plans. Lift the check and also fix SQL serialization of {{minus}} in
> {{SetQueryOperation#asSerializableString}} to render {{EXCEPT}}.
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