WITH    CTE_SID ( BSID, SID, sql_handle )
          AS ( SELECT   blocking_session_id ,
                        session_id ,
                        sql_handle
               FROM     sys.dm_exec_requests
               WHERE    blocking_session_id <> 0
               UNION ALL
               SELECT   A.blocking_session_id ,
                        A.session_id ,
                        A.sql_handle
               FROM     sys.dm_exec_requests A
                        JOIN CTE_SID B ON A.SESSION_ID = B.BSID
             )
    SELECT  C.BSID ,
            C.SID ,
            S.login_name ,
            S.host_name ,
            S.status ,
            S.cpu_time ,
            S.memory_usage ,
            S.last_request_start_time ,
            S.last_request_end_time ,
            S.logical_reads ,
            S.row_count ,
            q.text
    FROM    CTE_SID C 
            JOIN sys.dm_exec_sessions S ON C.sid = s.session_id
            CROSS APPLY sys.dm_exec_sql_text(C.sql_handle) Q
    ORDER BY sid

---查询死锁源头：

use master
go
declare @spid int,@bl int
DECLARE s_cur CURSOR FOR
select  0 ,blocked
from (select * from sysprocesses where  blocked>0 ) a
where not exists(select * from (select * from sysprocesses where  blocked>0 ) b
where a.blocked=spid)
union select spid,blocked from sysprocesses where  blocked>0
OPEN s_cur
FETCH NEXT FROM s_cur INTO @spid,@bl
WHILE @@FETCH_STATUS = 0
begin
if @spid =0
select '引起数据库死锁的是:
PID:'+ CAST(@bl AS VARCHAR(10))
else
select '进程号SPID：'+ CAST(@spid AS VARCHAR(10))+ '被' + '
进程号SPID：'+ CAST(@bl AS VARCHAR(10)) +'阻塞,其当前进程执行的SQL语法如下'
DBCC INPUTBUFFER (@bl )
FETCH NEXT FROM s_cur INTO @spid,@bl
end
CLOSE s_cur
DEALLOCATE s_cur

--查询死锁

select    
    request_session_id spid,   
    OBJECT_NAME(resource_associated_entity_id) tableName    
from    
    sys.dm_tran_locks   
where    
    resource_type='OBJECT'

--杀死死锁进程

kill 354 

--显示死锁相关信息

exec sp_who2 53