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  1. MariaDB Server
  2. MDEV-12836

Avoid table rebuild when removing of auto_increment settings

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    • Sprint:
      10.2.12, 5.5.59

      Description

      Basically, it's a request to implement upstream feature request:

      https://bugs.mysql.com/bug.php?id=72109

      Copying the table to just drop auto_increment attribute:

      MariaDB [test]> create table t(id int auto_increment not null, key(id)) engine=InnoDB;
      Query OK, 0 rows affected (0.22 sec)
       
      MariaDB [test]> alter table t modify column id int not null, algorithm=inplace; 
      ERROR 1846 (0A000): ALGORITHM=INPLACE is not supported. Reason: Cannot change column type INPLACE. Try ALGORITHM=COPY
      

      is awful in production. Workarounds exist, but why not to do this in-place and without copying all the data?

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              Assignee:
              serg Sergei Golubchik
              Reporter:
              valerii Valerii Kravchuk
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                Updated:
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