MySQL 8.4 Release Notes
- 10.15.1 典型用法10.15.1 Typical Usage
- 10.15.2 控制跟踪的系统变量10.15.2 System Variables Controlling Tracing
- 10.15.3 可跟踪语句10.15.3 Traceable Statements
- 10.15.4 调优跟踪清理10.15.4 Tuning Trace Purging
- 10.15.5 跟踪内存使用情况10.15.5 Tracing Memory Usage
- 10.15.6 权限检查10.15.6 Privilege Checking
- 10.15.7 与 --debug 选项的交互10.15.7 Interaction with the --debug Option
- 10.15.8 optimizer_trace 系统变量10.15.8 The optimizer_trace System Variable
- 10.15.9 end_markers_in_json 系统变量10.15.9 The end_markers_in_json System Variable
- 10.15.10 选择要跟踪的优化器功能10.15.10 Selecting Optimizer Features to Trace
- 10.15.11 跟踪的一般结构10.15.11 Trace General Structure
- 10.15.12 示例10.15.12 Example
- 10.15.13 在其他应用程序中显示跟踪10.15.13 Displaying Traces in Other Applications
- 10.15.14 防止使用优化器跟踪10.15.14 Preventing the Use of Optimizer Trace
- 10.15.15 测试优化器跟踪10.15.15 Testing Optimizer Trace
- 10.15.16 优化器跟踪实现10.15.16 Optimizer Trace Implementation
MySQL 优化器包括执行跟踪的功能；接口由一组 optimizer_trace_xxx 系统变量和 INFORMATION_SCHEMA.OPTIMIZER_TRACE 表提供。The MySQL optimizer includes the capability to perform tracing; the
interface is provided by a set of
optimizer_trace_xxx system variables and the
INFORMATION_SCHEMA.OPTIMIZER_TRACE
table.