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  1. Flink
  2. FLINK-6462

Add requiresOver interface for AggregateFunction

    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.3.0, 1.4.0
    • Component/s: Table API & SQL
    • Labels:
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      Description

      The window function in the standard database only supports the "over" window, such as `LAG`,` LEAD`, `FIRST_VALUE`,` LAST_VALUE`. These window functions do not apply to `Slide`,` Tumble`, `Session` window. So when the user-defined AGG need to be clearly defined. In calcite `SqlAggFunction` will using `requiresOver` to distinguish.
      In this JIRA. will deal with this feature.

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              • Assignee:
                sunjincheng121 sunjincheng
                Reporter:
                sunjincheng121 sunjincheng
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                  Updated:
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