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Please note that this FLIP has been abandoned.


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Discussion threadhere (<- link to https://lists.apache.org/list.html?dev@flink.apache.org)thread/0jdvry7wl9fk15qcpo56tj1s9lzyv551
Vote threadhere (<- link to https://lists.apache.org/list.html?dev@flink.apache.org)
JIRAhere (<- link to https://issues.apache.org/jira/browse/FLINK-XXXX)
Release<Flink Version>


Please keep the discussion on the mailing list rather than commenting on the wiki (wiki discussions get unwieldy fast).

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Legacy Part

Only retained to provide sufficient context.


Motivation

Although the current Flink SQL Window Aggregation documentationdocumentation[1] indicates that the legacy Group Window Aggregation syntax has been deprecated, the new Window TVF Aggregation syntax has not fully covered all of the features of the legacy one.

For the difference in features between Group Window Aggregation and Window TVF Aggregation, please refer to the appendix chapter. Compared to Group Window AggergationAggregation, Window TVF Aggergation Aggregation has several advantages, such as two-stage optimization, support for standard GROUPING SET syntax, and so on. However, it needs to supplement and enrich the following features.

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