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godfrey he edited comment on FLINK-23544 at 9/1/21, 2:33 AM: ------------------------------------------------------------- [~twalthr] I didn't realize the syntax mistake when reviewing this pr, so sorry about that +1 to only expose the standard syntax, and revert the pr. was (Author: godfreyhe): [~twalthr] I didn't realize the syntax mistake when reviewing this pr, so sorry about that +1 to only expose the correct syntax. > Window TVF Supports session window > ---------------------------------- > > 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 > Fix For: 1.14.0 > > > 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 -- This message was sent by Atlassian Jira (v8.3.4#803005)