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  1. MariaDB Server
  2. MDEV-38502

FULL OUTER JOIN get correct sargable condition

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Details

    • Task
    • Status: In Review (View Workflow)
    • Major
    • Resolution: Unresolved
    • 13.0
    • Optimizer
    • None
    • Q1/2026 Server Maintenance

    Description

      Consider

      select * 
      from 
        t1 full outer join t2 on on_cond
      		 
      where
      		 
        where_cond

      Here, we can use on_cond to construct table quick selects. We can't use where_cond with FULL OUTER JOIN.

      get_sargable_cond() implements this logic for LEFT JOIN. Need to modify it for FULL OUTER JOIN.

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          is caused by

          New Feature - A new feature of the product, which has yet to be developed. MDEV-36813 FULL OUTER JOIN for single table

          • Major - Major loss of function.
          • In Progress

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            People

              monty Michael Widenius
              Gosselin Dave Gosselin
              Dave Gosselin Dave Gosselin
              Michael Widenius Michael Widenius
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                Updated:

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