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  1. MariaDB Server
  2. MDEV-397

Changing a column name via ALTER ONLINE does not work for InnoDB

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Minor
    • Resolution: Won't Fix
    • Affects Version/s: 5.5.25, 5.3.7
    • Fix Version/s: 5.5.34
    • Component/s: None
    • Labels:
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      Description

      I'm not sure whether it's expected behavior, filing just in case it's not.

      http://kb.askmonty.org/en/alter-table/ says that changing a column name online should work; and it does for MyISAM, but not for InnoDB:
      query 'ALTER ONLINE TABLE t1 CHANGE COLUMN i i2 INT' failed: 1915: Can't execute the given 'ALTER' command as online

      Some other CHANGE COLUMN operations do work, even for InnoDB, e.g.
      ALTER ONLINE TABLE t1 CHANGE COLUMN i i INT DEFAULT 1

      Test case:

      --source include/have_innodb.inc
       
      CREATE TABLE t1 (i INT) ENGINE=InnoDB;
      ALTER ONLINE TABLE t1 CHANGE COLUMN i i2 INT;
       
      DROP TABLE t1;

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            Assignee:
            monty Michael Widenius
            Reporter:
            elenst Elena Stepanova
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              Updated:
              Resolved:

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