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  1. Flink
  2. FLINK-687

Add support for outer-joins

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    Details

    • Type: New Feature
    • Status: Closed
    • Priority: Minor
    • Resolution: Implemented
    • Affects Version/s: None
    • Fix Version/s: 0.10.0
    • Component/s: None
    • Labels:

      Description

      There are three types of outer-joins:

      • left outer,
      • right outer, and
      • full outer
        joins.

      An outer-join does not "filter" tuples of the outer-side that do not find a matching tuple on the other side. Instead, it is joined with a NULL value.

      Supporting outer-joins requires some modifications in the join execution strategies.

      ---------------- Imported from GitHub ----------------
      Url: https://github.com/stratosphere/stratosphere/issues/687
      Created by: fhueske
      Labels: enhancement, java api, runtime,
      Created at: Mon Apr 14 12:09:00 CEST 2014
      State: open

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            • Assignee:
              r-pogalz Ricky Pogalz
              Reporter:
              github-import GitHub Import
            • Votes:
              1 Vote for this issue
              Watchers:
              7 Start watching this issue

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              • Created:
                Updated:
                Resolved: