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sys dm_exec_query_stats How to see a history of queries ran on a SQL server

jobgemws profile image Evgeniy Gribkov ・2 min read

You can review query history in one of the following ways:

  • Queries are saved in the cache via system representations like sys.dm_exec_query_stats, sys.dm_exec_sql_text и sys.dm_exec_query_plan For example, you can output 100 queries with the highest execution time (including all delays) using the following script:

with s as (
select top(100)
creation_time,
last_execution_time,
execution_count,
total_worker_time/1000 as CPU,
convert(money, (total_worker_time))/(execution_count*1000)as [AvgCPUTime],
qs.total_elapsed_time/1000 as TotDuration,
convert(money, (qs.total_elapsed_time))/(execution_count*1000)as [AvgDur],
total_logical_reads as [Reads],
total_logical_writes as [Writes],
total_logical_reads+total_logical_writes as [AggIO],
convert(money, (total_logical_reads+total_logical_writes)/(execution_count + 0.0)) as [AvgIO],
[sql_handle],
plan_handle,
statement_start_offset,
statement_end_offset,
plan_generation_num,
total_physical_reads,
convert(money, total_physical_reads/(execution_count + 0.0)) as [AvgIOPhysicalReads],
convert(money, total_logical_reads/(execution_count + 0.0)) as [AvgIOLogicalReads],
convert(money, total_logical_writes/(execution_count + 0.0)) as [AvgIOLogicalWrites],
query_hash,
query_plan_hash,
total_rows,
convert(money, total_rows/(execution_count + 0.0)) as [AvgRows],
total_dop,
convert(money, total_dop/(execution_count + 0.0)) as [AvgDop],
total_grant_kb,
convert(money, total_grant_kb/(execution_count + 0.0)) as [AvgGrantKb],
total_used_grant_kb,
convert(money, total_used_grant_kb/(execution_count + 0.0)) as [AvgUsedGrantKb],
total_ideal_grant_kb,
convert(money, total_ideal_grant_kb/(execution_count + 0.0)) as [AvgIdealGrantKb],
total_reserved_threads,
convert(money, total_reserved_threads/(execution_count + 0.0)) as [AvgReservedThreads],
total_used_threads,
convert(money, total_used_threads/(execution_count + 0.0)) as [AvgUsedThreads]
from sys.dm_exec_query_stats as qs with(readuncommitted)
order by convert(money, (qs.total_elapsed_time))/(execution_count*1000) desc
)
select
s.creation_time,
s.last_execution_time,
s.execution_count,
s.CPU,
s.[AvgCPUTime],
s.TotDuration,
s.[AvgDur],
s.[AvgIOLogicalReads],
s.[AvgIOLogicalWrites],
s.[AggIO],
s.[AvgIO],
s.[AvgIOPhysicalReads],
s.plan_generation_num,
s.[AvgRows],
s.[AvgDop],
s.[AvgGrantKb],
s.[AvgUsedGrantKb],
s.[AvgIdealGrantKb],
s.[AvgReservedThreads],
s.[AvgUsedThreads],
--st.text as query_text,
case
when sql_handle IS NULL then ' '
else(substring(st.text,(s.statement_start_offset+2)/2,(
case
when s.statement_end_offset =-1 then len(convert(nvarchar(MAX),st.text))*2
else s.statement_end_offset
end - s.statement_start_offset)/2 ))
end as query_text,
db_name(st.dbid) as database_name,
object_schema_name(st.objectid, st.dbid)+'.'+object_name(st.objectid, st.dbid) as [object_name],
sp.[query_plan],
s.[sql_handle],
s.plan_handle,
s.query_hash,
s.query_plan_hash
from s
cross apply sys.dm_exec_sql_text(s.[sql_handle]) as st
cross apply sys.dm_exec_query_plan(s.[plan_handle]) as sp

Fig.1 Transaction Log in DBeaver

Fig.2 Execution History in SQL Complete

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