优化SQL必备

优化SQL必备:

SELECT
TOP 1000 ST. TEXT AS ‘执行的SQL语句’,
QS.execution_count AS ‘执行次数’,
QS.total_elapsed_time AS ‘耗时’,
QS.total_logical_reads AS ‘逻辑读取次数’,
QS.total_logical_writes AS ‘逻辑写入次数’,
QS.total_physical_reads AS ‘物理读取次数’,
QS.creation_time AS ‘执行时间’
FROM
sys.dm_exec_query_stats QS CROSS APPLY sys.dm_exec_sql_text (QS.sql_handle) ST
WHERE
QS.creation_time BETWEEN ‘2019-10-10 15:00:00.000’
AND ‘2019-10-22 18:00:00.000’
ORDER BY
QS.total_elapsed_time DESC;

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