SELECT
(total_elapsed_time / execution_count)/1000 N'平均时间ms'
,total_elapsed_time/1000 N'总花费时间ms'
,total_worker_time/1000 N'所用的CPU总时间ms'
,total_physical_reads N'物理读取总次数'
,total_logical_reads/execution_count N'每次逻辑读次数'
,total_logical_reads N'逻辑读取总次数'
,total_logical_writes N'逻辑写入总次数'
,execution_count N'执行次数'
,SUBSTRING(st.text, (qs.statement_start_offset/2) + 1,
((CASE statement_end_offset
WHEN -1 THEN DATALENGTH(st.text)
ELSE qs.statement_end_offset END
- qs.statement_start_offset)/2) + 1) N'执行语句'
,creation_time N'语句编译时间'
,last_execution_time N'上次执行时间'
FROM
sys.dm_exec_query_stats AS qs CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) as st
WHERE
SUBSTRING(st.text, (qs.statement_start_offset/2) + 1,
((CASE statement_end_offset
WHEN -1 THEN DATALENGTH(st.text)
ELSE qs.statement_end_offset END
- qs.statement_start_offset)/2) + 1) not like '%fetch%'
and creation_time between '2012-05-07 01:35:00.000' and '2020-05-07 01:35:00.000'
ORDER BY
-- last_execution_time DESC
total_elapsed_time / execution_count DESC;

查看当前执行的语句

SELECT  [Spid] = session_Id, ecid, [Database] = DB_NAME(sp.dbid),
[User] = nt_username,
[Status] = er.status,
[Wait] = wait_type, 
[Individual Query] = SUBSTRING(qt.text, er.statement_start_offset / 2, (CASE WHEN er.statement_end_offset = - 1 THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2 ELSE er.statement_end_offset END - er.statement_start_offset) / 2),                       
[Parent Query] = qt.text,                       
Program = program_name, Hostname,                       
nt_domain, start_time
FROM  sys.dm_exec_requests er INNER JOIN  sys.sysprocesses sp ON er.session_id = sp.spid  
CROSS APPLY sys.dm_exec_sql_text(er.sql_handle) AS qt WHERE     session_Id > 50 /* Ignore system spids.*/ AND session_Id NOT IN (@@SPID)