sql server性能分析--查询死锁的sql语句

-- 查询死锁和阻塞的sql语句

SELECT    CAST ( REPLACE ( REPLACE (XEventData.XEvent.value( ' (data/value)[1] ' ,
                                                      ' varchar(max) ' ),
                              ' <victim-list> ' ,  ' <deadlock><victim-list> ' ),
                      ' <process-list> ' ,  ' </victim-list><process-list> ' )  AS  XML)  AS  DeadlockGraph
FROM     (  SELECT      CAST (target_data  AS  XML)  AS  TargetData
           FROM       sys.dm_xe_session_targets st
                     JOIN  sys.dm_xe_sessions s  ON  s.address  =  st.event_session_address
           WHERE       [ name ]   =   ' system_health '
        )  AS  Data
         CROSS  APPLY TargetData.nodes( ' //RingBufferTarget/event ' )  AS  XEventData ( XEvent )
WHERE    XEventData.XEvent.value( ' @name ' ,  ' varchar(8000) ' )  =   ' xml_deadlock_report '  ;