• sql server 根据执行计划查询耗时操作


     1 with QS as(
     2 select    cp.objtype as object_type,                                                    /*类型*/
     3         db_name(st.dbid) as [database],                                                /*数据库*/
     4         object_schema_name(st.objectid,st.dbid) as [schema],                        /*架构*/
     5         object_name(st.objectid,st.dbid) as [object],                                /*对象名*/
     6         convert(char(16),qs.creation_time,120) as plan_creation,                    /*计划生成时间*/
     7         convert(char(16),qs.last_execution_time,120) as last_execution,                /*最后执行时间*/
     8         qs.plan_generation_num,
     9         qs.execution_count,                                                            /*执行次数*/
    10         qs.total_elapsed_time/(1000*qs.execution_count) as avg_elapesd_seconds,        /*总花费时间ms*/
    11         qs.total_worker_time/(1000*qs.execution_count) as avg_cpu_cost,                /*平均cpu耗时ms*/
    12         qs.total_logical_reads/qs.execution_count as avg_logical_reads,                /*平均逻辑读*/
    13         qs.total_logical_writes/qs.execution_count as avg_logical_writes,            /*平均逻辑写*/
    14         qs.total_physical_reads/qs.execution_count as avg_physical_reads,            /*平均屋里读*/
    15         st.text,                                                                    /*执行文本*/
    16         qp.query_plan                                                                /*执行计划*/
    17 from sys.dm_exec_query_stats qs
    18 join sys.dm_exec_cached_plans cp on cp.plan_handle=qs.plan_handle
    19 cross apply sys.dm_exec_sql_text(sql_handle) as st
    20 cross apply sys.dm_exec_query_plan(qs.plan_handle) as qp
    21 )select top 20 * from QS
    22  where text like '%%'
    23  --and object_type='Proc'
    24  --and avg_logical_reads>200
    25  and execution_count>100 /*执行次数*/
    26  --and last_execution_time>dateadd(mi,-10,getdate())
    27 and last_execution >= '2016-05-01 00:00:00.000' /*最后执行时间*/
    28  order by avg_logical_reads desc 

    29
  • 相关阅读:
    数值项目的格式化
    ORACLE ERROR CODE代表的意思
    深入了解 Microsoft AJAX Library
    调用MSScriptContro来运算字符串表达式
    C# 调用带参数EXE文件及带启动参数EXE制作
    将DataTable或Ilist<>转换成JSON格式
    客户端控件调用服务器的参数
    调用ICodeCompiler来计算字符串表达式
    录像工具
    今天是开博客园的第一天
  • 原文地址:https://www.cnblogs.com/weiweictgu/p/5617108.html
Copyright © 2020-2023  润新知