DB－如何排查导致数据库CPU 100%的SQL？

SELECT s.session_id,

       r.start_time,

       r.total_elapsed_time/1000 AS   elapsed_seconds,

       r.status AS RequestStatus,

       r.database_id,

       DB_NAME(r.database_id) AS   DatabaseName,

       r.reads,

       r.writes,

       r.logical_reads,

       r.cpu_time,

       r.total_elapsed_time,

       s.status AS SessionStatus,

       qt.event_info as text,

       getdate() createtime

    FROM sys.dm_exec_requests(n