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  1. Hive
  2. HIVE-17766

Support non-equi LEFT SEMI JOIN

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.0.0
    • Component/s: Query Planning
    • Labels:
      None

      Description

      Currently we get an error like 

      Non equality condition not supported in Semi-Join

      This is required to generate better plan for EXISTS/IN correlated subquery where such queries are transformed into LEFT SEMI JOIN.

        Attachments

        1. HIVE-17766.patch
          21 kB
          Jesus Camacho Rodriguez
        2. HIVE-17766.05.patch
          102 kB
          Jesus Camacho Rodriguez
        3. HIVE-17766.04.patch
          93 kB
          Jesus Camacho Rodriguez
        4. HIVE-17766.03.patch
          48 kB
          Jesus Camacho Rodriguez
        5. HIVE-17766.02.patch
          47 kB
          Jesus Camacho Rodriguez
        6. HIVE-17766.01.patch
          40 kB
          Jesus Camacho Rodriguez

          Issue Links

          is depended upon by

          Improvement - An improvement or enhancement to an existing feature or task. HIVE-17767 Rewrite correlated EXISTS/IN subqueries into LEFT SEMI JOIN

          • Major - Major loss of function.
          • Closed
          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. HIVE-17914 Provide support for complex expressions in ON clauses for SEMIjoins

          • Major - Major loss of function.
          • Resolved
          relates to

          Improvement - An improvement or enhancement to an existing feature or task. HIVE-16940 Residual predicates in join operator prevent vectorization

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

          Web Link RB link

            Activity

              People

              • Assignee:
                jcamachorodriguez Jesus Camacho Rodriguez
                Reporter:
                vgarg Vineet Garg
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                Dates

                • Created:
                  Updated:
                  Resolved: