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--统计最近最耗时的SQL语句
--1. 不用 CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle)
SELECT TOP 50
(select text from sys.dm_exec_sql_text(sql_handle)) as [SQL]
, CAST( ((qs.total_elapsed_time / 1000000.0)/qs.execution_count) AS DECIMAL(28,2) ) AS [平均消耗秒数]
, qs.last_execution_time AS [最后执行时间]
, CAST(qs.last_elapsed_time / 1000000.0 AS DECIMAL(28, 2)) AS [最后完成消耗秒数]
, 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]
, qs.*
from sys.dm_exec_query_stats qs
ORDER BY qs.last_elapsed_time DESC
--2. 用 CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle)
SELECT TOP 50
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 [Statement_SQL]
, CAST( ((qs.total_elapsed_time / 1000000.0)/qs.execution_count) AS DECIMAL(28,2) ) AS [平均消耗秒数]
, qs.last_execution_time AS [最后执行时间]
, CAST(qs.last_elapsed_time / 1000000.0 AS DECIMAL(28, 2)) AS [最后完成消耗秒数]
, 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]
, qs.*
from sys.dm_exec_query_stats qs
CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) AS st
ORDER BY qs.last_elapsed_time DESC