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  1. MariaDB Server
  2. MDEV-26749

Optimizer_switch split_materialized Returns Wrong Results

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Details

    • Bug
    • Status: Stalled (View Workflow)
    • Major
    • Resolution: Unresolved
    • 10.5, 10.6, 10.5.11, 10.5.12, 10.3(EOL), 10.4(EOL), 10.7(EOL)
    • 10.5, 10.6
    • Optimizer
    • None
    • Centos7

    Description

      There is a bug with split_materialized.
      When optimizer_switch='split_materialized=on'; the attached query returns very wrong results. After disabling the split_materialized, it returns the correct results.

      This bug starts in 10.5.10, which is the version that includes the fixes from 10.4.19. 10.4.19 includes MDEV-25128 fix which could be a blame option. The bug does not happen in 10.5.9.

      I've attached the .sql to reproduce the bug.

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            igor Igor Babaev
            ksizemore Kathryn Sizemore
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            Dates

              Created:
              Updated:

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