MS SQL Server 如何得到执行最耗时的前N条T-SQL语句-

--得到最耗时的前N条T-SQL语句

--适用于SQL SERVER 2005及其以上版本
--给N赋初值为30

declare @n int set @n=30
;with maco as

(

    select top (@n)

        plan_handle,

        sum(total_worker_time) as total_worker_time ,

        sum(execution_count) as execution_count ,

        count(1) as sql_count

    from sys.dm_exec_query_stats group by plan_handle

    order by sum(total_worker_time) desc

)

select  t.text ,

        a.total_worker_time ,

        a.execution_count ,

        a.sql_count

from    maco a

        cross apply sys.dm_exec_sql_text(plan_handle) t
/* 结果格式如下

text     total_worker_time  execution_count   sql_count

-------- ------------------ ----------------- ---------

内容略

*/  

MS SQL Server 如何得到执行最耗时的前N条T-SQL语句-