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MySQL 8 Cookbook by Karthik Appigatla

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In-place Downgrades

For downgrades between the GA status releases within MySQL 8.0 (note that you cannot downgrade to MySQL 5.7 using this method):

  1. Shut down the old MySQL version
  2. Replace the MySQL 8.0 binaries or older binaries
  3. Restart MySQL on the existing data directory
  4. Run the mysql_upgrade utility

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