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  1. Flink
  2. FLINK-6462

Add requiresOver interface for AggregateFunction

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 1.3.0, 1.4.0
    • Table SQL / API
    • None

    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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          blocks

          Sub-task - The sub-task of the issue FLINK-6465 support FIRST_VALUE on Table API & SQL

          • Major - Major loss of function.
          • Closed
          links to

          Web Link GitHub Pull Request #3851

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            People

              sunjincheng121 sunjincheng
              sunjincheng121 sunjincheng
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              Dates

                Created:
                Updated:
                Resolved: