sql server性能分析--执行sql次数和逻辑次数

dbcc freeProcCache

SELECT   creation_time   N'语句编译时间'
         ,last_execution_time   N'上次执行时间'
         ,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'
         , total_worker_time/1000 N'所用的CPU总时间ms'
         , total_elapsed_time/1000   N'总花费时间ms'
         , (total_elapsed_time / execution_count)/1000   N'平均时间ms'
         ,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'
FROM sys.dm_exec_query_stats AS qs
CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) 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%'
ORDER BY   total_elapsed_time / execution_count DESC;