存储过程缓存表sys.dm_exec_procedure_stats的不同情况

--执行SQL查看存储过程的执行信息

SELECT TOP 10 a.object_id, a.database_id, OBJECT_NAME(object_id, database_id) 'proc name',

a.cached_time, a.last_execution_time, a.total_elapsed_time, a.total_elapsed_time/a.execution_count AS [avg_elapsed_time],

a.execution_count,

a.total_physical_reads/a.execution_count avg_physical_reads,

a.total_logical_writes,

a.total_logical_writes/ a.execution_count avg_logical_reads,

a.last_elapsed_time,

a.total_elapsed_time / a.execution_count avg_elapsed_time,

b.text,c.query_plan

FROM sys.dm_exec_procedure_stats AS a

CROSS APPLY sys.dm_exec_sql_text(a.sql_handle) b

CROSS APPLY sys.dm_exec_query_plan(a.plan_handle) c

ORDER BY [total_worker_time] DESC;

GO

第一种情况：数据库重启后，数据为空

 第二种情况：同样的一条数据，重复执行两次，以up_com_qry_fundassets存储过程为例，数据库不重启，第一次执行存储过程，耗时22ms,第二次执行存储过程，耗时5ms

 

select creation_time '编译时间',
last_execution_time '上次执行时间',
total_physical_reads '物理读取总次数',
total_logical_reads/execution_count '每次逻辑读次数',
total_logical_reads '逻辑读次数',
total_logical_writes '逻辑写次数',
execution_count '执行总次数',
total_worker_time/1000 '占用CPU总时间(毫秒)',
total_elapsed_time/1000 '总花费时间(毫秒)',
(execution_count/total_elapsed_time)/1000 '平均执行时间(毫秒)',
substring(st.text,(qs.statement_start_offset/2)+1,((case qs.statement_end_offset when -1 then datalength(st.text) else qs.statement_end_offset end -qs.statement_start_offset)/2)+1) '执行的SQL语句',
getdate() '执行收集时间'
from sys.dm_exec_query_stats as qs
cross apply sys.dm_exec_sql_text(qs.sql_handle)as st
where substring(st.text,(qs.statement_start_offset/2)+1,((case qs.statement_end_offset when -1 then datalength(st.text) else qs.statement_end_offset end -qs.statement_start_offset)/2)+1)
not like '%FETCH%'
ORDER BY total_elapsed_time/execution_count desc