sys.dm_exec_trigger_stats (Transact-SQL)

Article
2013-08-06

Returns aggregate performance statistics for cached triggers. The view contains one row per trigger, and the lifetime of the row is as long as the trigger remains cached. When a trigger is removed from the cache, the corresponding row is eliminated from this view. At that time, a Performance Statistics SQL trace event is raised similar to sys.dm_exec_query_stats.

Column name	Data type	Description
database_id	int	Database ID in which the trigger resides.
object_id	int	Object identification number of the trigger.
type	char(2)	Type of the object: TA = Assembly (CLR) trigger TR = SQL trigger
Type_desc	nvarchar(60)	Description of the object type: CLR_TRIGGER SQL_TRIGGER
sql_handle	varbinary(64)	This can be used to correlate with queries in sys.dm_exec_query_stats that were executed from within this trigger.
plan_handle	varbinary(64)	Identifier for the in-memory plan. This identifier is transient and remains constant only while the plan remains in the cache. This value may be used with the sys.dm_exec_cached_plans dynamic management view.
cached_time	datetime	Time at which the trigger was added to the cache.
last_execution_time	datetime	Last time at which the trigger was executed.
execution_count	bigint	Number of times that the trigger has been executed since it was last compiled.
total_worker_time	bigint	Total amount of CPU time, in microseconds, that was consumed by executions of this trigger since it was compiled.
last_worker_time	bigint	CPU time, in microseconds, that was consumed the last time the trigger was executed.
min_worker_time	bigint	Maximum CPU time, in microseconds, that this trigger has ever consumed during a single execution.
max_worker_time	bigint	Maximum CPU time, in microseconds, that this trigger has ever consumed during a single execution.
total_physical_reads	bigint	Total number of physical reads performed by executions of this trigger since it was compiled.
last_physical_reads	bigint	Number of physical reads performed the last time the trigger was executed.
min_physical_reads	bigint	Minimum number of physical reads that this trigger has ever performed during a single execution.
max_physical_reads	bigint	Maximum number of physical reads that this trigger has ever performed during a single execution.
total_logical_writes	bigint	Total number of logical writes performed by executions of this trigger since it was compiled.
last_logical_writes	bigint	Number of the number of buffer pool pages dirtied the last time the plan was executed. If a page is already dirty (modified) no writes are counted.
min_logical_writes	bigint	Minimum number of logical writes that this trigger has ever performed during a single execution.
max_logical_writes	bigint	Maximum number of logical writes that this trigger has ever performed during a single execution.
total_logical_reads	bigint	Total number of logical reads performed by executions of this trigger since it was compiled.
last_logical_reads	bigint	Number of logical reads performed the last time the trigger was executed.
min_logical_reads	bigint	Minimum number of logical reads that this trigger has ever performed during a single execution.
max_logical_reads	bigint	Maximum number of logical reads that this trigger has ever performed during a single execution.
total_elapsed_time	bigint	Total elapsed time, in microseconds, for completed executions of this trigger.
last_elapsed_time	bigint	Elapsed time, in microseconds, for the most recently completed execution of this trigger.
min_elapsed_time	bigint	Minimum elapsed time, in microseconds, for any completed execution of this trigger.
max_elapsed_time	bigint	Maximum elapsed time, in microseconds, for any completed execution of this trigger.

Permissions

Requires VIEW SERVER STATE permission on server.

Remarks

Statistics in the view are updated when a query is completed.

Examples

The following example returns information about the top five triggers identified by average elapsed time.

PRINT '--top 5 CPU consuming triggers '

SELECT TOP 5 d.object_id, d.database_id, DB_NAME(database_id) AS 'database_name', 
    OBJECT_NAME(object_id, database_id) AS 'trigger_name', d.cached_time,
    d.last_execution_time, d.total_elapsed_time, 
    d.total_elapsed_time/d.execution_count AS [avg_elapsed_time], 
    d.last_elapsed_time, d.execution_count
FROM sys.dm_exec_trigger_stats AS d
ORDER BY [total_worker_time] DESC;

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sys.dm_exec_trigger_stats (Transact-SQL)

Permissions

Remarks

Examples

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Reference

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