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https://issues.apache.org/jira/browse/FLINK-23544?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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godfrey he closed FLINK-23544.
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Resolution: Fixed
Fixed in 1.14.0: 34d51002796afd800fc99d47e3dd06acbd403531
> Window TVF Supports session window in plan
> ------------------------------------------
>
> Key: FLINK-23544
> URL: https://issues.apache.org/jira/browse/FLINK-23544
> Project: Flink
> Issue Type: Sub-task
> Components: Table SQL / Planner
> Reporter: JING ZHANG
> Assignee: JING ZHANG
> Priority: Minor
> Labels: pull-request-available
>
> Window TVF would support SESSION window in the following case:
> # SESSION Window TVF followed by Window Aggregate, in this case SESSION
> window TVF would be pulled up into WindowAggregate, so Window assigner would
> happen in WindowAggrgeate
>
> *Note, SESSION window TVF only works in limited cases currently, the
> following user cases is not supported yet:*
> # *SESSION WINDOW TVF followed by Window JOIN*
> # *SESSION WINDOW TVF followed by Window RANK***
> *BESIDES, SESSION window Aggregate does not support the following performance
> improvement yet:*
> 1. Split Distinct Aggregation
> 2. Local-global Aggregation
> 3. Mini-batch Aggregate
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