January 2018
Intermediate to advanced
446 pages
12h 57m
English
Content preview from MySQL 8 Cookbook
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Upgrading to MySQL 8.0
MySQL 8 uses a global data dictionary containing information about database objects in transactional tables. In previous versions, the dictionary data was stored in metadata files and non-transactional system tables. You need to upgrade your data directory from the file-based structure to the data-dictionary structure.
Just like a downgrade, you can upgrade using two methods:
- In-place upgrade
- Logical upgrade
You also should check a few prerequisites before the upgrade.
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