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  • SQL Server 查询性能异常语句

    SELECT TOP 10
           st.text AS SQL_Full,
           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
                    ) AS SQL_Part, --统计对应的部分语句
           CAST(((qs.total_elapsed_time / 1000000.0) / qs.execution_count) AS DECIMAL(28, 2)) AS [平均消耗秒数],
           CAST(qs.last_elapsed_time / 1000000.0 AS DECIMAL(28, 2)) AS [最后完成消耗秒数],
           qs.last_execution_time AS [最后执行时间],
           CAST(qs.min_elapsed_time / 1000000.0 AS DECIMAL(28, 2)) AS [最小消耗秒数],
           CAST(qs.max_elapsed_time / 1000000.0 AS DECIMAL(28, 2)) AS [最大消耗秒数],
           CAST(qs.total_elapsed_time / 1000000.0 AS DECIMAL(28, 2)) AS [总消耗秒数],
           (qs.execution_count) AS [总执行次数],
           creation_time AS [编译计划的时间],
           CAST(qs.last_worker_time / 1000000.0 AS DECIMAL(28, 2)) AS [最后完成占用CPU秒数],
           qp.query_plan
    FROM sys.dm_exec_query_stats qs
        CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) AS st
        CROSS APPLY sys.dm_exec_query_plan(qs.plan_handle) qp
    WHERE qs.last_execution_time > DATEADD(n, -30, GETDATE())
    ORDER BY qs.last_worker_time DESC;
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  • 原文地址:https://www.cnblogs.com/IIXS/p/13042609.html
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