SQL Server：查看sql语句的执行时间

女爷i 2021-11-02 08:32 1327阅读 0赞

*  方法一：

declare @d datetime
    set @d=getdate()
    /*你的SQL脚本开始*/
    SELECT * FROM pointInfo 
    /*你的SQL脚本结束*/
    select [语句执行花费时间(毫秒)]=datediff(ms,@d,getdate())

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*  方法二

SET STATISTICS PROFILE ON 
    SET STATISTICS io ON
    SET STATISTICS time ON 
    go
    SELECT * FROM pointInfo 
    go
    SET STATISTICS profile OFF
    SET STATISTICS io OFF
    SET STATISTICS time OFF

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1、查找目前SQL Server所执行的SQL语法，并展示资源情况：

SELECT  s2.dbid ,
             DB_NAME(s2.dbid) AS [数据库名] ,
             --s1.sql_handle ,
             ( SELECT TOP 1
                         SUBSTRING(s2.text, statement_start_offset / 2 + 1,
                                   ( ( CASE WHEN statement_end_offset = -1
                                            THEN ( LEN(CONVERT(NVARCHAR(MAX), s2.text))
                                                   * 2 )
                                            ELSE statement_end_offset
                                       END ) - statement_start_offset ) / 2 + 1)
             ) AS [语句] ,
             execution_count AS [执行次数] ,
             last_execution_time AS [上次开始执行计划的时间] ,
             total_worker_time AS [自编译以来执行所用的 CPU 时间总量（微秒）] ,
             last_worker_time AS [上次执行计划所用的 CPU 时间（微秒）] ,
             min_worker_time AS [单次执行期间曾占用的最小 CPU 时间（微秒）] ,
             max_worker_time AS [单次执行期间曾占用的最大 CPU 时间（微秒）] ,
             total_logical_reads AS [总逻辑读] ,
             last_logical_reads AS [上次逻辑读] ,
             min_logical_reads AS [最少逻辑读] ,
             max_logical_reads AS [最大逻辑读] ,
             total_logical_writes AS [总逻辑写] ,
             last_logical_writes AS [上次逻辑写] ,
             min_logical_writes AS [最小逻辑写] ,
             max_logical_writes AS [最大逻辑写]
     FROM    sys.dm_exec_query_stats AS s1
             CROSS APPLY sys.dm_exec_sql_text(sql_handle) AS s2
     WHERE   s2.objectid IS NULL
     ORDER BY last_worker_time DESC

2、展示耗时查询：

-- List expensive queries 
     DECLARE @MinExecutions int; 
     SET @MinExecutions = 5 
       
     SELECT EQS.total_worker_time AS TotalWorkerTime 
           ,EQS.total_logical_reads + EQS.total_logical_writes AS TotalLogicalIO 
           ,EQS.execution_count As ExeCnt 
           ,EQS.last_execution_time AS LastUsage 
           ,EQS.total_worker_time / EQS.execution_count as AvgCPUTimeMiS 
           ,(EQS.total_logical_reads + EQS.total_logical_writes) / EQS.execution_count  
            AS AvgLogicalIO 
           ,DB.name AS DatabaseName 
           ,SUBSTRING(EST.text 
                     ,1 + EQS.statement_start_offset / 2 
                     ,(CASE WHEN EQS.statement_end_offset = -1  
                            THEN LEN(convert(nvarchar(max), EST.text)) * 2  
                            ELSE EQS.statement_end_offset END  
                      - EQS.statement_start_offset) / 2 
                     ) AS SqlStatement 
           -- Optional with Query plan; remove comment to show, but then the query takes !!much longer time!! 
           --,EQP.[query_plan] AS [QueryPlan] 
     FROM sys.dm_exec_query_stats AS EQS 
          CROSS APPLY sys.dm_exec_sql_text(EQS.sql_handle) AS EST 
          CROSS APPLY sys.dm_exec_query_plan(EQS.plan_handle) AS EQP 
          LEFT JOIN sys.databases AS DB 
              ON EST.dbid = DB.database_id      
     WHERE EQS.execution_count > @MinExecutions 
           AND EQS.last_execution_time > DATEDIFF(MONTH, -1, GETDATE()) 
     ORDER BY AvgLogicalIo DESC 
             ,AvgCPUTimeMiS DESC

3、当前进程及其语句：

复制代码
    -- Current processes and their SQL statements 
     SELECT PRO.loginame AS LoginName 
           ,DB.name AS DatabaseName 
           ,PRO.[status] as ProcessStatus 
           ,PRO.cmd AS Command 
           ,PRO.last_batch AS LastBatch 
           ,PRO.cpu AS Cpu 
           ,PRO.physical_io AS PhysicalIo 
           ,SES.row_count AS [RowCount] 
           ,STM.[text] AS SQLStatement 
     FROM sys.sysprocesses AS PRO 
          INNER JOIN sys.databases AS DB 
              ON PRO.dbid = DB.database_id 
          INNER JOIN sys.dm_exec_sessions AS SES 
             ON PRO.spid = SES.session_id 
          CROSS APPLY sys.dm_exec_sql_text(PRO.sql_handle) AS STM      
     WHERE PRO.spid >= 50  -- Exclude system processes 
     ORDER BY PRO.physical_io DESC 
             ,PRO.cpu DESC;
    复制代码
     
    
    4、存储过程执行情况：
    
    复制代码
    -- Stored Procedure Execution Statistics 
     SELECT ISNULL(DBS.name, '') AS DatabaseName 
           ,OBJECT_NAME(EPS.object_id, EPS.database_id) AS ObjectName 
           ,EPS.cached_time AS CachedTime 
           ,EPS.last_elapsed_time AS LastElapsedTime 
           ,EPS.execution_count AS ExecutionCount 
           ,EPS.total_worker_time / EPS.execution_count AS AvgWorkerTime 
           ,EPS.total_elapsed_time / EPS.execution_count AS AvgElapsedTime 
           ,(EPS.total_logical_reads + EPS.total_logical_writes) 
            / EPS.execution_count AS AvgLogicalIO 
     FROM sys.dm_exec_procedure_stats AS EPS 
          LEFT JOIN sys.databases AS DBS 
              ON EPS.database_id = DBS.database_id 
     ORDER BY AvgWorkerTime DESC;
    复制代码
     
    
    5、开销较大的查询：
    
    复制代码
    /*
     开销较大的查询
     */
     SELECT  ss.SUM_execution_count ,
             t.text ,
             ss.SUM_total_elapsed_time ,
             ss.sum_total_worker_time ,
             ss.sum_total_logical_reads ,
             ss.sum_total_logical_writes
     FROM    ( SELECT    S.plan_handle ,
                         SUM(s.execution_count) SUM_Execution_count ,
                         SUM(s.total_elapsed_time) SUM_total_elapsed_time ,
                         SUM(s.total_worker_time) SUM_total_worker_time ,
                         SUM(s.total_logical_reads) SUM_total_logical_reads ,
                         SUM(s.total_logical_writes) SUM_total_logical_writes
               FROM      sys.dm_exec_query_stats s
               GROUP BY  S.plan_handle
             ) AS ss
             CROSS APPLY sys.dm_exec_sql_text(ss.plan_handle) t
     ORDER BY sum_total_logical_reads DESC

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