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  1. Hive
  2. HIVE-4080

Add Lead & Lag UDAFs

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.11.0
    • PTF-Windowing
    • None

    Description

      Currently we support Lead/Lag as navigation UDFs usable with Windowing.
      To be standard compliant we need to support Lead & Lag UDAFs.
      Will continue to support Lead/Lag UDFs as arguments to UDAFs when Windowing is in play.
      Currently allow Lead/Lag expressions to appear in SelectLists even when they are not arguments to UDAFs. Support for this feature will probably be removed. Causes ambiguities when Query contains different partition clauses. Will provide more details with associated Jira to remove this feature.

      Attachments

        1. HIVE-4080.1.patch.txt
          29 kB
          Harish Butani
        2. HIVE-4080.D8961.1.patch
          28 kB
          Phabricator
        3. HIVE-4080.D8961.2.patch
          30 kB
          Phabricator
        4. HIVE-4080.D8961.3.patch
          34 kB
          Phabricator

        Issue Links

          is required by

          New Feature - A new feature of the product, which has yet to be developed. HIVE-896 Add LEAD/LAG/FIRST/LAST analytical windowing functions to Hive.

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

          Activity

            People

              rhbutani Harish Butani
              rhbutani Harish Butani
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              Dates

                Created:
                Updated:
                Resolved: