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https://issues.apache.org/jira/browse/FLINK-6473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16411052#comment-16411052
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yinhua.dai commented on FLINK-6473:
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[~fhueske]
I can't make it work as retract() only works for the OVER action.
Without OVER, I only know the solution for fixed window, like TUMBLE or HOP
window.
If I have below table as source:
||datetime||productId||price||
|3-1|p1|10|
|3-2|p1|20|
|3-3|p1|30|
|3-4|p1|40|
Then I expect the result table would be:
||datetime||productId||average||
|3-1|p1|10/1|
|3-2|p1|(10+20)/2|
|3-3|p1|(10+20+30)/3|
|3-4|p1|(10+20+30+40)/4|
> Add OVER window support for batch tables
> ----------------------------------------
>
> Key: FLINK-6473
> URL: https://issues.apache.org/jira/browse/FLINK-6473
> Project: Flink
> Issue Type: New Feature
> Components: Table API & SQL
> Reporter: Fabian Hueske
> Priority: Major
>
> Add support for OVER windows for batch tables.
> Since OVER windows are supported for streaming tables, this issue is not
> about the API (which is available) but about adding the execution strategies
> and translation for OVER windows on batch tables.
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