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  1. MariaDB Server
  2. MDEV-13704

Nested query does not give same result as subquery and an outer query

Details

    • Bug
    • Status: Closed (View Workflow)
    • Major
    • Resolution: Fixed
    • 10.2.6, 10.2.7, 10.2.8, 10.3.1
    • N/A
    • Optimizer
    • Windows 64

    Description

      A nested query does not return correct results in at least one case.

      Scenario:

      • A nested query query (Select col... where col in (subquery)) returns empty.
      • Subquery correctly returns the rows (x,y,z).
      • OuterQuery takes (z,y,z) in an IN statement and correctly selects the relevant results (Select col... where col in (x,y,z))

      This is not happening in 10.1 but only on 102 onwards.

      I could not reproduce in a simpler scenario. Perhaps this is due to using fulltext search in the subquery, or any other reason.

      Details:
      https://stackoverflow.com/questions/45964454/subqueries-do-not-work-in-windows-but-works-on-linux

      Tables are innodb. Attached the cfg settings I added to my.ini.

      Attachments

        Issue Links

          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-13994 Bad join results with orderby_uses_equalities=on

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-13390 Identity server Db Select Statement order by issue.

          • Major - Major loss of function.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. MDEV-13694 Wrong result upon GROUP BY with orderby_uses_equalities=on

          • Critical - Crashes, loss of data, severe memory leak.
          • Closed

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            People

              varun Varun Gupta (Inactive)
              costateixeira Jose Costa Teixeira
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              Dates

                Created:
                Updated:
                Resolved:

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