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  1. MariaDB Server
  2. MDEV-20440

Optimizer trace: print more details about semi-join optimization

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      This is to track this improvement
      http://lists.askmonty.org/pipermail/commits/2019-August/013945.html

      revision-id: 31815d37666d3ca9fae2df45b99138e1c4507bab (mariadb-10.4.7-33-g31815d37666)
      parent(s): efb8485d85b19a2a729310adc6779ca649198f29
      author: Sergei Petrunia
      committer: Sergei Petrunia
      timestamp: 2019-08-25 11:03:19 +0300
      message:
       
      MDEV-6111: Optimizer Trace: add tracing for semi-join optimizations
       
      Added:
      - "semijoin_strategy_choice" element (actions in advance_sj_state(), name
        matches the name in MySQL)
       
      - semijoin_table_pullout element.
      
      

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              • Assignee:
                psergey Sergei Petrunia
                Reporter:
                psergey Sergei Petrunia
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