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How to Find Longest Running Queries

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The following DMV query returns the creation time, last execution time, physical and logical reads / writes, as well as time elapsed in the execution of a SQL statement (also detailed).

Very useful in establishing the heavier TSQL queries within an environment!

SELECT  creation_time 
,last_execution_time
,total_physical_reads
,total_logical_reads 
,total_logical_writes
, execution_count
, total_worker_time
, total_elapsed_time
, total_elapsed_time / execution_count avg_elapsed_time
,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_text
FROM sys.dm_exec_query_stats AS qs
CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) st
ORDER BY total_elapsed_time / execution_count DESC;

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