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' ;