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https://issues.apache.org/jira/browse/FLINK-6465?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15998543#comment-15998543
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Hequn Cheng commented on FLINK-6465:
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hi radu,
Yes. Both first_value and last_value will have two modes: with retraction and
without retraction, so there will be four AggregateFunctions:
FirstValueAggFunction, FirstValueWithRetractAggFunction, LastValueAggFunction
and LastValueWithRetractAggFunction
> support FIRST_VALUE and LAST_VALUE on Table API & SQL
> -----------------------------------------------------
>
> Key: FLINK-6465
> URL: https://issues.apache.org/jira/browse/FLINK-6465
> Project: Flink
> Issue Type: New Feature
> Components: Tabe
> Reporter: Hequn Cheng
> Assignee: Hequn Cheng
>
> support `FIRST_VALUE` and `LAST_VALUE` analytic functions
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