sql 找到昂贵的SQL查询

Posted 2021-05-13

select top 10
    substring(qt.TEXT, (qs.statement_start_offset/2)+1,
    ((case qs.statement_end_offset  when -1 then datalength(qt.TEXT)
                                    else qs.statement_end_offset
        end - qs.statement_start_offset)/2)+1),
    qs.execution_count,
    qs.total_logical_reads,
    qs.last_logical_reads,
    qs.total_logical_writes,
    qs.last_logical_writes,
    qs.total_worker_time,
    qs.last_worker_time,
    qs.total_elapsed_time/1000000 total_elapsed_time_in_S,
    qs.last_elapsed_time/1000000 last_elapsed_time_in_S,
    qs.last_execution_time,
    qp.query_plan
from sys.dm_exec_query_stats qs
cross apply sys.dm_exec_sql_text(qs.sql_handle) qt
cross apply sys.dm_exec_query_plan(qs.plan_handle) qp
order by qs.total_logical_reads desc -- logical reads
-- order by qs.total_logical_writes desc -- logical writes
-- order by qs.total_worker_time desc -- CPU time