MySQL 8.4 Release Notes
30.4.5.12 Performance Schema ps_is_instrument_default_timed() 函数
返回 YES 或 NO，指示是否将给定的 Performance Schema 仪表默认进行计时。
-
in_instrument VARCHAR(128)：要检查的仪表名称。
一个 ENUM('YES','NO') 值。
mysql> SELECT sys.ps_is_instrument_default_timed('memory/innodb/row_log_buf');
+-----------------------------------------------------------------+
| sys.ps_is_instrument_default_timed('memory/innodb/row_log_buf') |
+-----------------------------------------------------------------+
| NO |
+-----------------------------------------------------------------+
mysql> SELECT sys.ps_is_instrument_default_timed('statement/sql/alter_user');
+----------------------------------------------------------------+
| sys.ps_is_instrument_default_timed('statement/sql/alter_user') |
+----------------------------------------------------------------+
| YES |
+----------------------------------------------------------------+