26.4.5.12 ps_is_instrument_default_timed()函数

返回YES或NO以指示默认情况下给定的 Performance Schema 工具是否计时。

Parameters

• in_instrument VARCHAR(128)：要检查的仪器名称。

Return Value

ENUM('YES','NO')值。

Example

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                                                            |
+----------------------------------------------------------------+