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  • SQLServer最耗资源时间的SQL语句

    作者kolachen

    http://blog.sina.com.cn/s/blog_63f3e0060102vcm0.html

    先拷过来了,等有空再研究一下

    执行最慢的SQL语句
    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) 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 '�tch%'
    ORDER BY
    total_elapsed_time / execution_count DESC;
    
    --总耗CPU最多的前个SQL:
    SELECT TOP 20
        total_worker_time/1000 AS [总消耗CPU 时间(ms)],execution_count [运行次数],
        qs.total_worker_time/qs.execution_count/1000 AS [平均消耗CPU 时间(ms)],
        last_execution_time AS [最后一次执行时间],max_worker_time /1000 AS [最大执行时间(ms)],
        SUBSTRING(qt.text,qs.statement_start_offset/2+1, 
            (CASE WHEN qs.statement_end_offset = -1 
            THEN DATALENGTH(qt.text) 
            ELSE qs.statement_end_offset END -qs.statement_start_offset)/2 + 1) 
        AS [使用CPU的语法], qt.text [完整语法],
        qt.dbid, dbname=db_name(qt.dbid),
        qt.objectid,object_name(qt.objectid,qt.dbid) ObjectName
    FROM sys.dm_exec_query_stats qs WITH(nolock)
    CROSS apply sys.dm_exec_sql_text(qs.sql_handle) AS qt
    WHERE execution_count>1
    ORDER BY  total_worker_time DESC
    
    
    --平均耗CPU最多的前个SQL:
    SELECT TOP 20
        total_worker_time/1000 AS [总消耗CPU 时间(ms)],execution_count [运行次数],
        qs.total_worker_time/qs.execution_count/1000 AS [平均消耗CPU 时间(ms)],
        last_execution_time AS [最后一次执行时间],min_worker_time /1000 AS [最小执行时间(ms)],
        max_worker_time /1000 AS [最大执行时间(ms)],
        SUBSTRING(qt.text,qs.statement_start_offset/2+1, 
            (CASE WHEN qs.statement_end_offset = -1 
            THEN DATALENGTH(qt.text) 
            ELSE qs.statement_end_offset END -qs.statement_start_offset)/2 + 1) 
        AS [使用CPU的语法], qt.text [完整语法],
        qt.dbid, dbname=db_name(qt.dbid),
        qt.objectid,object_name(qt.objectid,qt.dbid) ObjectName
    FROM sys.dm_exec_query_stats qs WITH(nolock)
    CROSS apply sys.dm_exec_sql_text(qs.sql_handle) AS qt
    WHERE  execution_count>1
    ORDER BY (qs.total_worker_time/qs.execution_count/1000) DESC
    
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  • 原文地址:https://www.cnblogs.com/danlis/p/7793589.html
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