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https://issues.apache.org/jira/browse/FLINK-6959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16057103#comment-16057103
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Fabian Hueske commented on FLINK-6959:
--------------------------------------

I don't think we need to add a specific section to the documentation. This is 
standard SQL syntax and semantics. 
Group windows have their own section beause the window functions (TUMBLE, HOP, 
etc) are Calcite specific an part of the SQL standard.

We could extend the OVER window entry in the Aggregation Operations and be more 
specific about the limitations though.

> Add documentation for SQL OVER windows
> --------------------------------------
>
>                 Key: FLINK-6959
>                 URL: https://issues.apache.org/jira/browse/FLINK-6959
>             Project: Flink
>          Issue Type: Improvement
>          Components: Documentation, Table API & SQL
>    Affects Versions: 1.4.0
>            Reporter: sunjincheng
>            Assignee: sunjincheng
>
> Add documentation for SQL OVER windows.



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