mssql查询过去一段时间数据库中执行过的语句及执行效率

    SELECT TOP 1000   
           ST.text AS '执行的SQL语句',  
           QS.execution_count AS '执行次数',  
           QS.total_elapsed_time AS '耗时',  
           QS.total_logical_reads AS '逻辑读取次数',  
           QS.total_logical_writes AS '逻辑写入次数',  
           QS.total_physical_reads AS '物理读取次数',         
           QS.creation_time AS '执行时间' ,    
           QS.*  
    FROM   sys.dm_exec_query_stats QS  
           CROSS APPLY   
    sys.dm_exec_sql_text(QS.sql_handle) ST  
    WHERE  QS.creation_time BETWEEN '2017-8-23 00:00:00' AND '2017-8-24 00:00:00'   
    ORDER BY  
         QS.total_elapsed_time DESC

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