查看最耗資源的SQL語句、或者最佔CPU的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 [運行次數],  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) ObjectNameFROM sys.dm_exec_query_stats qs WITH(nolock)CROSS apply sys.dm_exec_sql_text(qs.sql_handle) AS qtWHERE execution_count>1ORDER 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 [運行次數],  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) ObjectNameFROM sys.dm_exec_query_stats qs WITH(nolock)CROSS apply sys.dm_exec_sql_text(qs.sql_handle) AS qtWHERE  execution_count>1ORDER BY (qs.total_worker_time/qs.execution_count/1000) DESC