MySQL 8.0 参考手册 / 第 28 章 MySQL 系统模式 / 28.4 sys 模式对象参考 / 28.4.5 sys 模式存储函数 /
26.4.5.11 ps_is_instrument_default_enabled() 函数
返回YES
或NO
指示默认情况下是否启用给定的性能模式工具。
mysql> SELECT sys.ps_is_instrument_default_enabled('memory/innodb/row_log_buf');
+-------------------------------------------------------------------+
| sys.ps_is_instrument_default_enabled('memory/innodb/row_log_buf') |
+-------------------------------------------------------------------+
| NO |
+-------------------------------------------------------------------+
mysql> SELECT sys.ps_is_instrument_default_enabled('statement/sql/alter_user');
+------------------------------------------------------------------+
| sys.ps_is_instrument_default_enabled('statement/sql/alter_user') |
+------------------------------------------------------------------+
| YES |
+------------------------------------------------------------------+