MySQL 8.0版本说明
MySQL 8.0源代码文档10bet官方网站
给定性能模式线程ID，则返回user_name@host_name
in_thread_id BIGINT UNSIGNED:要为其返回帐户的线程ID。的值应该匹配THREAD_ID列线程表行。
SELECT sys.ps_thread_account(sys.ps_thread_id(CONNECTION_ID()));+----------------------------------------------------------+ | sys.ps_thread_account (sys.ps_thread_id (CONNECTION_ID ())) | +----------------------------------------------------------+ | root@localhost | +----------------------------------------------------------+