Timo Walther created FLINK-8168:
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             Summary: Add offset support for group windows
                 Key: FLINK-8168
                 URL: https://issues.apache.org/jira/browse/FLINK-8168
             Project: Flink
          Issue Type: Bug
          Components: Table API & SQL
            Reporter: Timo Walther


For supporting different timezones, it might be necessary to offset windows by 
some hours (e.g., -8). The DataStream API allows to define 
[offsets|https://ci.apache.org/projects/flink/flink-docs-release-1.3/dev/windows.html#tumbling-windows].
 Flink SQLs group windows should also support such a behavior. It might be 
necessary to introduce the semantics to Apache Calcite first before we can 
implement it in Flink.



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