前言和法律条款
这是 MySQL 数据库系统 v8.0 到 v8.0.33 的参考手册。Differences between minor versions of MySQL 8.0 are noted in the present text with reference to release numbers (8.0.x)。有关许可信息，参阅法律条款。
本手册不打算用于较老版本的 MySQL 软件，因为 MySQL 8.0 与之前的版本存在很多功能以及其它方面的差异。如果你使用的是早期版本的 MySQL，请参阅对应的手册。例如，MySQL 5.7 参考手册 涵盖 5.7 系列 MySQL 软件版本.
许可信息—MySQL 8.0. 该软件可能包含经许可使用的第三方软件。如果你使用的是 MySQL 8.0 的商业版本，see the MySQL 8.0 Commercial Release License Information User Manual for licensing information，including licensing information relating to third-party software that may be included in this Commercial release。如果你使用的是 MySQL 8.0 的社区版本，see the MySQL 8.0 Community Release License Information User Manual for licensing information，including licensing information relating to third-party software that may be included in this Community release.
许可信息—MySQL NDB Cluster 8.0. 如果正在使用 MySQL NDB Cluster 8.0 商业版本，参阅 MySQL NDB Cluster 8.0 商业版本发布许可信息用户手册获取许可信息，包括可能包含在此商业版本中的第三方软件的许可信息。如果正在使用 MySQL NDB Cluster 8.0 开源版本，参阅 MySQL NDB Cluster 8.0 社区版本发布许可信息用户手册获取许可信息，其中包括可能包含在该开源版本中的第三方软件的许可信息。
法律条款
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