有关详细的升级信息，请参见 第 3 章, 升级 MySQL。升级时不要跳过一个主要版本，而应分步骤完成，从一个主要版本升级到下一个主要版本。这样看起来可能更复杂，但最终能节省时间和麻烦。如果在升级过程中遇到问题，更容易确定其来源，无论是您自己，还是如果您有 MySQL 企业订阅，也可以由 MySQL 支持帮助解决。For detailed upgrade information, see Chapter 3, Upgrading MySQL. Do not skip a major version when upgrading, but rather complete the process in steps, upgrading from one major version to the next in each step. This may seem more complicated, but ultimately saves time and trouble. If you encounter problems during the upgrade, their origin is easier to identify, either by you or, if you have a MySQL Enterprise subscription, by MySQL support.