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performance_schema

更新时间：2026-06-12 17:41:06

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performance_schema 用于向客户端声明是否支持 performance 信息的查询。

属性	描述
参数类型	bool
默认值	OFF
取值范围	ON：支持 OFF：不支持
生效范围	GLOBAL
是否重启生效	否

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