執行最慢的SQL語句、總耗CPU最多的前個SQL、平均耗CPU最多的前個SQL
--執行最慢的SQL語句 SELECT (total_elapsed_time / execution_count)/1000 N'平均時間ms' ,total_elapsed_time/1000 N'總花費時間ms' ,total_worker_time/1000 N'所用的CPU總時間ms' ,total_physical_reads N'物理讀取總次數' ,total_logical_reads/execution_count N'每次邏輯讀次數' ,total_logical_reads N'邏輯讀取總次數' ,total_logical_writes N'邏輯寫入總次數' ,execution_count N'執行次數' ,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'執行語句' ,creation_time N'語句編譯時間' ,last_execution_time N'上次執行時間' 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; --總耗CPU最多的前個SQL: SELECT TOP 20 total_worker_time/1000 AS [總消耗CPU 時間(ms)],execution_count [執行次數], qs.total_worker_time/qs.execution_count/1000 AS [平均消耗CPU 時間(ms)], last_execution_time AS [最後一次執行時間],max_worker_time /1000 AS [最大執行時間(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的語法], qt.text [完整語法], 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最多的前個SQL: SELECT TOP 20 total_worker_time/1000 AS [總消耗CPU 時間(ms)],execution_count [執行次數], qs.total_worker_time/qs.execution_count/1000 AS [平均消耗CPU 時間(ms)], last_execution_time AS [最後一次執行時間],min_worker_time /1000 AS [最小執行時間(ms)], max_worker_time /1000 AS [最大執行時間(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的語法], qt.text [完整語法], 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