ps_thread_stack()函数

对于给定的线程ID，返回Performance Schema中所有语句，阶段和事件的JSON格式的堆栈。

参量

• in_thread_id BIGINT：要跟踪的线程的ID。该值应与THREAD_ID某些“性能模式”threads表行中的列匹配。
• in_verbose BOOLEAN：是否file:lineno在事件中包括信息。

返回值

一个LONGTEXT CHARACTER SET latin1值。

例

mysql> SELECT sys.ps_thread_stack(37, FALSE) AS thread_stack\G
*************************** 1. row***************************
thread_stack: {"rankdir": "LR","nodesep": "0.10",
"stack_created": "2014-02-19 13:39:03", "mysql_version": "8.0.2-dmr-debug-log",
"mysql_user": "root@localhost","events": [{"nesting_event_id": "0",
"event_id": "10", "timer_wait": 256.35, "event_info": "sql/select",
"wait_info": "select @@version_comment limit 1\nerrors: 0\nwarnings: 0\nlock time:
...