mysql8.0新特性

1. 支持Window Functions：可以对分组结果进行分析和排序，实现更灵活的数据分析。

2. 支持Common Table Expressions（CTE）：可以在查询中创建临时表格，让复杂的查询更加简单易懂。

3. 支持Invisible Indexes：创建一个不可见的索引，可以用于测试和优化而不会影响生产环境。

4. 支持JSON类型：可以将JSON数据存储在数据库中，并使用内置的JSON函数进行查询和操作。

5. 支持全文本搜索：可以在表格中进行全文本搜索，并使用内置的全文本搜索函数进行高效的查询。

6. 支持更好的性能和可扩展性：在多核CPU和高并发情况下，MySQL 8.0的性能和可扩展性得到了显著的提升。

7. 支持更好的安全性：MySQL 8.0引入了更多的安全特性，包括密码策略、加密连接、访问控制等，保障了数据库的安全性。

8. 支持更好的管理工具：MySQL 8.0提供了更好的管理工具，包括MySQL Shell、MySQL Workbench等，使得数据库的管理更加简单易用。

相关问题

mysql8.0 新特性

1. Window functions: MySQL 8.0 now supports window functions, which allows users to perform complex analytical queries with ease.

2. Common Table Expressions (CTEs): CTEs are temporary result sets that can be used within a single SQL statement. This feature makes it easier to write complex queries and improves code readability.

3. Recursive Common Table Expressions (RCTEs): RCTEs are a special type of CTE that allows users to write recursive queries. This feature is useful for queries that involve hierarchical data.

4. JSON enhancements: MySQL 8.0 includes several enhancements to its JSON support, including better performance and improved functionality.

5. Invisible indexes: This feature allows users to mark an index as "invisible," which means that it will not be used by the query optimizer. This can be useful for testing the impact of removing an index without actually removing it.

6. Instant ADD COLUMN: MySQL 8.0 includes a new feature that allows users to add a new column to a table without copying the entire table. This can be useful for large tables with many columns.

7. Roles: MySQL 8.0 introduces the concept of roles, which allows users to define sets of privileges that can be assigned to multiple users.

8. Improved performance: MySQL 8.0 includes several performance improvements, including better support for multi-threaded queries and faster data loading.

9. Improved security: MySQL 8.0 includes several security enhancements, including improved password management and support for encrypted connections.

10. Improved replication: MySQL 8.0 includes several improvements to its replication capabilities, including support for multiple replication channels and better conflict detection and resolution.