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  1. MariaDB Server
  2. MDEV-16354

Allow ALGORITHM=INPLACE for ADD COLUMN…PERSISTENT AS

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    Description

      Adding a stored generated column is only implemented by the inefficient ALGORITHM=COPY. InnoDB should allow it with ALGORITHM=INPLACE, possibly even with ALGORITHM=NOCOPY (instantly add the column, then update the rows with the computed values). This might even be possible with LOCK=NONE.

      MDEV-16329 would allow any ALTER TABLE with ALGORITHM=COPY and LOCK=NONE. The added value of an InnoDB-specific implementation would be that the table does not have to be copied.

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          is blocked by

          Task - A task that needs to be done. MDEV-16356 Allow ALGORITHM=NOCOPY for ADD CONSTRAINT

          • Major - Major loss of function.
          • Open
          relates to

          Task - A task that needs to be done. MDEV-11424 Instant ALTER TABLE of failure-free record format changes

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

          Task - A task that needs to be done. MDEV-16329 Engine-independent online ALTER TABLE

          • Blocker - Blocks development and/or testing work, production could not run.
          • Closed

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              marko Marko Mäkelä
              marko Marko Mäkelä
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